The Worst Typo I Ever Made

When 'undo' won't do. • Sponsored by Dashlane, the password manager. Get a 30-day free trial at • MORE BASICS:
Written with Sean Elliott SeanMElliott/
Graphics by William Marler
Audio mix by Graham Haerther
I'm at
on Twitter at tomscott
on Facebook at tomscott
and on Instagram as tomscottgo


  1. Tom Scott

    Tom Scott

    11 måneder siden

    Thanks to Dashlane for returning to advertise on this video! If you're techie enough to be watching this, you should be using a password manager:

    • artm pir

      artm pir

      2 dager siden

      I feel his pain, I wrote the wrong answer right before the time was called and I remembered the right answer just an onosecond later but it was too late It reallyyy hurts

    • WaxyLT 2146

      WaxyLT 2146

      22 dager siden

      can we please see the 5000 pages of content?

    • Nichtdu


      29 dager siden

      Bro I accidently typed password forgotten on dashlane without premium and then all my passwords got deleted :/

    • LowLinK


      Måned siden

      No thanks

    • Rashiro


      Måned siden

      I never understood the point of password manager. Isn't it a way bigger security risk to store all you password in one place. What if Dashlane gets hacked? I'm one of those few people who uses different passwords for every single page and just keep those passwords in my head. If a random website I registered to gets hacked, doesn't matter, because my password from there won't work anywhere else. But if a password manager service gets hacked? Now the hackers have access to every single website you have an account for.

  2. TheExplodingPie


    12 timer siden


  3. MRCG Millenium

    MRCG Millenium

    17 timer siden

    he's actually not a boomer not "gen y" or any other generation.

  4. Ryan Bananahands

    Ryan Bananahands

    20 timer siden


  5. Bein' Ian

    Bein' Ian

    Dag siden

    Once I was ending an email with "Regards," and realized how close the "t" and "g" keys are to each other.

  6. phillip kaufmann

    phillip kaufmann

    Dag siden

    once i typed " Bigger " but since the N letter is right next to the B key well i think you are smart enough to figure out what i typed

  7. Matt Waterworth

    Matt Waterworth

    2 dager siden

    Mysqldump and dump again even for anything small. The pain of this type of mistake makes it mandatory.

  8. Yash Vashistha

    Yash Vashistha

    2 dager siden

    Why did it replace all the articles with the word content, it was only suppose to replace the dashes

  9. BabyFireDragon2


    3 dager siden

    someone send this to me, after I did //set barrier instead of //walls barrier and for some reason I cant //undo it.

  10. W.J.R. Halyn

    W.J.R. Halyn

    4 dager siden

    Had a 5TB hard drive suddenly & inexplicably fail last year. Total crash, irrecoverable, dead-down offline. $25,000 worth of client data embedded on it, plus the last ten years of my own stuff: writings, pictures, videos, spreadsheets... the whole thing. That's when I discovered my "auto"-backups had not been working, and the most recent client data was over a year old... thus, about $20K (and months of work at my expense) would be needed to manually rebuild it all. Happened on a Friday before a long weekend... was physically ill for three days as all drive recovery services were closed. Fortunately, on Tuesday I connected with a Toronto service that carefully disassembled the unit, discovered a micro-particle of dust had somehow gotten into the drive and BENT a couple drive heads (colliding with them at 72K RPM speeds), somehow bypassed all the damage in their clean room, and restored 99.999999% of my data. Haven't even found yet anything that didn't come back, so no loss there. But, at a cost of $1,000+, it was an expensive lesson to check & ensure your auto-backups are actually backing up. My basic system now includes another two 5TB drives as well as manual copy-outs of client data to a rotating set of USB drives weekly. A hard lesson, but one well-learned.

  11. ChirpyMisha


    4 dager siden

    I once made a backup. I checked if it worked. I made a mistake while checking if it worked. I ended up losing the backup and the normal data. Luckily it wasn't really important, but it was frustrating 😥

  12. glenesis


    4 dager siden

    I'd comment, but I'm off to back up now 🙏

  13. Andrew Nesham

    Andrew Nesham

    5 dager siden

    Thanks. I'm going to have nightmares now.

  14. It Beat

    It Beat

    7 dager siden

    God... this would be a nightmare

  15. Pac Tube

    Pac Tube

    7 dager siden

    This is the most common mistake I've ever found on NOnet.

  16. Joseph


    7 dager siden

  17. Laika Tankz

    Laika Tankz

    7 dager siden

    anxiety flashback from me; I worked at a software company who provided an application to the Sexual Health services of the NHS. We had a table that contained static data for medications/prescriptions, so stuff like the dosage, the quantity, the frequency of use etc.. The customer had asked us to delete one of the medications as it was no longer prescribed by the NHS, I used to format my SQL so it was easily readable (one line for DELETE, one line for FROM, one line for WHERE), except this time I ran only the top 2 lines and missed the WHERE, without a rollback. So I deleted 30,000 rows of medication. This took me about 15 hours of near constant working to resolve, as it had a massive implication, the customer wasn't even able to load up the data of the patients to log notes against because the tables were so tied up. In the end I had to restore a backup from 2 or 3 days prior (ironically the backups had been failing due to a space issue too). one of the most stressful days of my life, so thanks to this video from bringing back my supressed anxiety. I now use begin tran, rollback tran, commit tran so much I can type the whole thing in about 3 seconds, muscle memory of where those letters are :D

  18. Rinaldo Jonathan

    Rinaldo Jonathan

    10 dager siden

    I once 'rm -rf *''ed my whole website.

  19. Faraway Brawl Hacks

    Faraway Brawl Hacks

    10 dager siden

    Of course I would find this after a HDD loss (which happened to have months of work in it). And during those months it didn't occur to me once "this HDD could one moment suddenly stop working, I should archive a copy".

  20. Ceyhun ay

    Ceyhun ay

    10 dager siden


  21. RayMan


    11 dager siden

    The Basics.

  22. Anna Darko

    Anna Darko

    11 dager siden

    Ah yes, the many times I've worked on the master branch when I really shouldn't have...

  23. guywithknife


    12 dager siden

    Haha I noticed the typo right away... ouch! An easy mistake to make!

  24. therugburnz


    12 dager siden

    The worst typo you ever made. Good one. What about the worst typo made EVER. The worst one could make for a certain time period, on the interwebs, on a database, that killed X# of Phones, Megabytes of data, Rea! Humans !

  25. Dylyn02


    13 dager siden

    The worst type ive made was "Watfjcdskolas".

  26. Samplex


    13 dager siden

    Onosecond alot of men have noticed this moment of regret after they **********

  27. The Notorious V.Y.S

    The Notorious V.Y.S

    13 dager siden

    That was like watching a character in the movie getting out of an extremely awkward situation by lying, but then it haunts him for the rest of the movie

  28. Braden Sorensen

    Braden Sorensen

    13 dager siden

    I just realized I’m living in an Onolifetime.

  29. GaMMer 500

    GaMMer 500

    14 dager siden


  30. Giacomo Bertolini

    Giacomo Bertolini

    14 dager siden


  31. Joe Christo

    Joe Christo

    14 dager siden


  32. Katze


    14 dager siden

    I just warched this video, went out for school and realized that i forgot half my homework and a certain circle drawing device. Oh no. I need both today

  33. vmannv


    14 dager siden


  34. Aaron Morgan

    Aaron Morgan

    15 dager siden

    I once ko'ed a shiny pokemon

  35. Skiller50 General

    Skiller50 General

    15 dager siden

    When I saw the thumbnail, I thought the typo was to write "onosecond" instead of "one second".

  36. Pali33


    15 dager siden

    When you type something about your therapist and you accidentaly press space.

  37. Misz


    15 dager siden

    I need to change my syntax highlighting to make single quotes and backtiks completely different colors

  38. Miranda Keigher

    Miranda Keigher

    15 dager siden

    I was looking at the thumbnail trying to figure out what's so bad about typing "onosecond" instead of "one second". I am a fool.

  39. nikola plays

    nikola plays

    16 dager siden

    OnO!!! A second just passed and I still haven't handed in my exam!!!

  40. Miroslav Zahariev

    Miroslav Zahariev

    17 dager siden

    I gave every user in our DB the same bank account number with a similar mistake :D

  41. Martti Innanen

    Martti Innanen

    17 dager siden

    And how exactly did anyone let you near a database before you learned about binary logs, mysqldump and what they're used for?

  42. Povilaz


    17 dager siden

    It took me a year to understand what onosecond means. Onosecond -> oh no second.

  43. Vibez Development

    Vibez Development

    18 dager siden

    I deleted my source today so thank you for this one NOnet, mocking my dumb mistake as usual.

  44. Rhiddhi Prasad Das

    Rhiddhi Prasad Das

    18 dager siden

    everybody gangsta until real content creator appears

  45. TheYazi


    18 dager siden

    Even before NOnet, all Tom would write was content.

  46. Pedro B. Luís

    Pedro B. Luís

    18 dager siden

    I would have typed this before 😁 select `content`, replace('content','---','') from `articles` limit 1; +------------------+---------------------------------+ | content | replace('content','---','') | +------------------+---------------------------------+ | yada---yada | content | +------------------+---------------------------------+

  47. stev ryu

    stev ryu

    18 dager siden

    This is the most entertaining and depressing comment section ever. Schadenfreude at its best

  48. C Arai

    C Arai

    18 dager siden


  49. yogi


    19 dager siden

    wait why didnt u just change it back to when "content" turned into "---" like ye

    • Matías García Casas

      Matías García Casas

      14 dager siden

      There was no way to change it back. All the articles were completely gone, all of them just said "content"

  50. Ririfi Ri

    Ririfi Ri

    20 dager siden

    I almost made a mistake when i told to change every number in visio drawing to a quarter of what's there. There's a lot of pages, so i should use replace to do it much faster. And then realized that it wasn't that easy right before i press enter

  51. Ian Taakalla

    Ian Taakalla

    20 dager siden

    As a question, how was that situation you put yourself in work out?

  52. Arslan Ahmad

    Arslan Ahmad

    20 dager siden

    That makes you the fastest 'content' creator, I guess. and I use Bitwarden.

  53. Peter Farr

    Peter Farr

    21 dag siden

    This is why you take backups, oof

  54. Mikira


    21 dag siden


  55. Adam Řežábek

    Adam Řežábek

    21 dag siden

    does Dashline avoid some passwords becouse they are reall words?

  56. Udbhav Mandapaka

    Udbhav Mandapaka

    21 dag siden

    Fun Fact: The onosecond is now replaced by what the kids call the bruh moment

  57. Tggamer


    21 dag siden

    thats an onomoment :(

  58. Vedprakash


    21 dag siden

    tom is my favourite 'content' creator

  59. Rafał Dydkiem Machał

    Rafał Dydkiem Machał

    22 dager siden

    I always run SELECT query before UPDATE just to make sure I didn't make a mistake like this one 😅

  60. Exectech


    22 dager siden

    A series of mistakes due to oversight will almost always result in a catastrophe.

  61. Henry the Green Engine

    Henry the Green Engine

    22 dager siden

    I thoght that the onosecond was a typoe for "one secodn". Find three typos here!

  62. mustachesrcool


    22 dager siden

    idk what u just told me

  63. Ronnie Roo

    Ronnie Roo

    22 dager siden

    I looked at my gears as I thought my chain popped I looked up and a giant nettle bush uh oh

  64. SmallerHumanoid


    23 dager siden

    Everyone’s had this feeling at some point...

  65. Ross Tapson

    Ross Tapson

    23 dager siden

    Been there :) great video.

  66. John Moyle

    John Moyle

    23 dager siden


  67. 64Yoshi64


    23 dager siden

    3:02 "easy to reach" sad qwertz keyboard user noises :'(

  68. Fuzzy Images

    Fuzzy Images

    24 dager siden

    I didn't know you worked on toy story 2

  69. Luigi - Fan

    Luigi - Fan

    24 dager siden

    "...that easy-to-reach keyboard shortcut of Ctrl-Z" *laughs in QWERTZ-Layout*

  70. Robert Marchini

    Robert Marchini

    24 dager siden

    I saw a tweet a while ago, can't remember who wrote it, but it was a quote of one of those "scare a developer in 5 words" and the tweet was: "mysql> done. 5847293948 records changed." I still have nightmares about this.

  71. Pranav Pothanis

    Pranav Pothanis

    24 dager siden

    I actually thought the 'onosecond' was a typo

  72. 3DMax


    24 dager siden

    There's something we like to say in our IT-Department: "Kein Backup, kein Mitleid" Eng:"No backup, no pity" :P

  73. maria fe

    maria fe

    24 dager siden


  74. Don Johnson

    Don Johnson

    25 dager siden

    Not that bad, I once saw a typo that led to a suicide. Remember, could be worse...

    • DV Games

      DV Games

      Dag siden

      What was the typo?

  75. Seal Boy

    Seal Boy

    25 dager siden

    So everything I do while playing chess?



    25 dager siden

    I upgrade the family pc from windows vista to Windows 7. I wiped the only digital backup of my parents wedding photos

  77. Commenter339


    25 dager siden

    hey, you explained it simply enough that I got to the end of this video, but I wouldn't call myself 'techie'... xD really entertaining story. relatable and mortifying 😬😅

  78. Commenter339


    25 dager siden

    clbuttic mistake. what a brilliant word!

  79. Fallenriverie


    26 dager siden

    Clbuttic mistake is the most genius name I've ever heard

  80. Thom B.

    Thom B.

    26 dager siden


  81. G


    26 dager siden

    Come here for a tech topic, leave with a profound life lesson.

  82. G


    26 dager siden

    A Brit who says zee, not zed, cool!! 🤣

  83. Kitty Cake

    Kitty Cake

    26 dager siden


  84. Kitty Cake

    Kitty Cake

    26 dager siden

    the second you send a screenshot to your school project group and realize you had a yaoi website in your tabs..... -__-

    • Bonkle Man

      Bonkle Man

      21 dag siden

      Cmd Shift F Win Shift F Please.

  85. RyanSpacePineapple


    27 dager siden

    i had one WHILE WATCHING THE VIDEO on twitter

  86. HungerGamesFan88


    27 dager siden

    as a student in uni panicking my way through existence itself this brought back the nauseating sense of OH GOD WHAT IS THIS from trying to figure out what the hell Git is and how it works after barely paying attention in class

  87. honk friend !!!!!!

    honk friend !!!!!!

    27 dager siden


  88. Seushimare Jikaze

    Seushimare Jikaze

    27 dager siden

    -"writing a bat file that opens itself for infinite instances and running it on your own computer, to see if it works" moment -"deleting some sys files to see what happens (i have copies, right?)" moment -"flashing bios during thunderstorm, experiencing power failure" moment -"putting old cd into the drive, lid launches through the room and loud thud can be heard" moment seriously this video made me remember so many of my "ohnosecond" that i had a serious laugh for at least 10 seconds

  89. Clark Potter

    Clark Potter

    28 dager siden

    "oh no" second

  90. Budrose


    28 dager siden

    Me thinking it would’ve been worse Example: misspelling of the word ‘bigger’

  91. Nick Leui

    Nick Leui

    29 dager siden

    OnOsecond. OwOsecond

  92. Luca Dario Bützberger

    Luca Dario Bützberger

    Måned siden

    I am obsewsed with backups. I have a ton of backups of everything. You know what I don't have backups off? The only stuff I somehow manage to loose even if I still need it. :/

  93. Alex Heap

    Alex Heap

    Måned siden

    bet you done it on a friday afternoon aswell

  94. Tedj


    Måned siden

    6:30, your welcome

  95. MenyeMC


    Måned siden

    Him: smiling and retelling the story me: *sweating profusely*

    • MenyeMC


      Måned siden

      Well i have learned my lesson

  96. MenyeMC


    Måned siden

    Him: smiling and retelling the story me: *sweating profusely*

  97. KoLMiW


    Måned siden

    Reminds me of that old bumblebee typo where they had an extra space in: rm -rf /usr /lib/nvidia-current/xorg/xorg thus, it deletes /usr

  98. LRC


    Måned siden

    Im sorry I did laugh at the "content" of this video XD



    Måned siden

    The UPDATE with no WHERE. And also, this is one of the reasons I use PostgreSql. MySQL has a very poor command line interface and very strange habits on the quotes. This is important for me, I deal with the production database daily. Also, restoring a database content, is the worst thing ever, one day we might have a better solution for this problem, so it could be rebuild, not necessarily restored from a backup.

  100. Priyam Mascharak

    Priyam Mascharak

    Måned siden

    I feel sick in the stomach