flu cousin

When you and another guy get cheated on by the same girl but both of you already fucked her and you both have her AIDS.

Guy One:Dude,I can't believe she used us like that,and now I have AIDS from her.
Guy Two:Bro I got AIDS from her too!
Guy One:Holy moly that makes us flu cousins.
Guy Two:Man let's go somewhere to eat,my treat.