Quit a tolerable but not great job for what looked like a great opportunity with a small tech house. A few weeks in, February 13, 2006, to be exact - and there is a reason I remember the date - the boss tells me the next big project is moving email accounts to another server. And he's going to tech me how.
So we spend a few hours with me at the keyboard and him standing behind me saying "OK, click here, type this there, select the server...". We started with a florist's account.
Next day, boss comes in furious. "Who the hell screwed with X's email account? Their fucking florists, and somebody fucked their fucking email up the day before fucking Valentine's Day!" Not nice language for a Mormon. Does that word really have two "M"s?
"We did - you were training me."
"Well, we did a crap job."
The job dragged on for a few weeks after that, but it really was over that day. And before I found another tech job, I had my massage therapists license.