What is Nut Bunker?
1.
A cup (athletic) to protect a man's privates from unnecessary trauma.
-Holy Shit Mike, watch your low kicks. Thank god I was wearing my nut bunker.
-These nut bunkers don't protect shit, I had a bruise on my dick the other day.
-Dude, why are you wearing my sweaty nut bunker as a face mask?!?
See