Definitions by Bellabwaha

Fishco 

Boyfriends that cheat on their girlfriends with nasty bitches and catch a repulsive infection that makes their penis smell like fish. Thus, the male being called Fishco.

Sarah: Dude, my boyfriends dick smells like fish...
Laura: Oh no, he's a Fishco!

Karissa: Oh... I thought that was normal.

Fishco by Bellabwaha November 8, 2010