Tries to Shove His Fist Into Her Tight Ass, Then Inserts a Huge Dildo

My stepaunt has gone south, and I think she won't mind if I play with my ass in her house. It's no big deal, right? I love panties when they fit snugly and sink completely between my buttocks. At moments like these, my arousal is at its peak, and it's as if my ass is already opening up.