Tuna Captain

A man who skippers lots of Tuna - or has sex with a lot of women.

Sam: "Hey Mike, is that the Tuna Captain talking to your girlfriend?"
Mike: "Oh shit. It is. You don't think he's skippered her, do you???"
Sam: "Probably. Guess you're single again."
Mike: "Fuck the Tuna Captain."
Sam: "Yeah, she already did, dude."