Whatever sinks your ship

A sarcastic variation of the phrase whatever floats your boat. Used in place of 'whatever floats your boat' when someone's preferences are harmful or you simply disagree with them.

Sammy: You should break up with Lex, she treats you like shit all the time.

Mark: Haha, she doesn't mean it. She only teases me cuz she likes me.

Sammy: Yeah... whatever sinks your ship, man.