The best "whoops!" moments at work

was it a colossal screw up? a public pantsing? let's hear it..
  1. "The Accidental Reply-All Email"
    Someone accidentally sent an email to a mass group of about 5,000 people. Now, you would think that if the email didn't pertain to them, people would delete it and move on. Oh no, instead hilarity ensues. First it starts with the "hey I don't think this belongs to me" reply alls, then degrading into the ironic "STOP HITTING REPLY ALL" reply alls, until finally culminating into memes mocking people for not knowing how to properly use email. This was the best day at work in a long time