To put in one's ass and make disappear or "dis-solve" the problem. Due to the fact that the butt contains acid in it. A sarcastic and insulting way of saying how can one add a "solution" to a situation.
This could also explain the quite "limber" apparence of so many gays, the "dis-solvation" of too many incredients in their "solution" compound.
Person one: I don't appreciate you flipping me off much.
Sarcastic twat face: Then sit on this and spin!