A term created by a man named Otto.
If you have every masturbated in a garage then you're a garage wanker
#1 - Guys the other day i saw Otto
#2 - That freak? what'd he do?
#1 - I saw him rub one out in his garage.
#3 - What!? What a garage wanker.
#1 - Yeah, I don't know what's weirder. The fact that he did it with the door open or the fact that all the kindergarten kids were watching .