Oh! I just remembered one. This is pretty up there on the 'oh, what the hell' list.
My own work messed up my order. That's right, you heard me. I go into Arby's on one of my days off, order a turkey ranch n bacon (mm-mm) with no onions. I've been working at this place for several months at this point, and am friends with everybody, and they know it's for me, and that I don't like onions. I get to my seat with it and find onions. I go back to the kitchen and go, "dude, Chris, what the hell, man. Did they not ring up 'no onions'?" To which he responds "yeah, they did, but so what? Just take 'em off yourself."
Ugh. Ass.