Testicles on your butt;
something you need if you are any of the following: fuck ass, fat fuck ass, pussy ass, nerd ass, and basically any word that comes before the word ass
Nick: Pussy ass bitch stop throwing shit at me
AJ: What are you talking about?
Nick: Fuckin nerd ass pussy fucking fuck ass you play lacrosse?
Nick: Pussy, grow some butt testicles