Also, I had a friend with a similar (perhaps worse) story. His company sent every employee an e-mail about being on time, to which he pushed Reply to All and typed "FUCK YOU!" He laughed to himself and went to push the Discard button, but accidentally hit Send in the process. He was about to try to ExMerge it out of Exchange when he heard a BlackBerry vibrate and realized that no amount of ExMerge would get it off the BBs. He spent the next hour going door-to-door apologizing, and also managed to not get fired.
Damn iMessage is a shocker for this. Coworker sends out group message saying big boss wants xyz and includes big boss in the group. Someone always misses that its a group message and sends an expletive or sarcastic reply. I am also guilty.
