(noun)- A strange and rare condition where the affected has two stout, often chode-type penises in place of a sac with two testicles. Always coupled with Ball-Cock.
a: Dude, I heard Simon has penis-nuts!
b: No way! that's so messed up. Wait, so does that mean he has a ball-cock too?
a: No shit. You can't have three penises. It goes against the laws of science. Didn't you ever take Biology?