1. a mental condition wherein one forgets where his balls are, usually resulting in spineless actions and mannerisms.
2. in bowling, throwing several strikes continuously, and then suddenly losing your rhythm for no apparent reason, resulting often in one if not many poor throws.
1. "bro, jerry was saying how he was gonna tell his boss off for cutting his hours, but then he contracted ballsheimer's at the last minute and didn't say shit."
2. "i don't where my A game went, man, i think i got ballsheimer's."