When overconfidence leads to disastrous results. This can often be applied to actions at parties with the opposite sex.
John: "Dude, did you see that? Mark just got rejected by Sydney in front of everyone. Why did he even think he could get a hot chick like that? That's pretty embarrassing."
Paul: "Yeah, that's an overdose on confidence if I've ever seen one."
by Levy1 October 30, 2011
Get the Overdose on Confidence mug.