Tell your best work related screw up story!

i was a bus boy at 'o'charley's about 2 years ago, and i cleared a table of 12 before they were done eating (they all went somewhere for a picture or something stupid, why they all got up at once, wtf...) because the manager kept getting on my *** about not skipping tables. so its his fault.
then he raced me one time because he said i was being slow, i told him he was being an asshole, and i 'oops' broke 3 $12 beer cups, really thin glass.. needless to say, i quit not too long after that.