1. A piece of ass that is acquired from a former significant other. 2. Getting some action from an ex-girlfriend without having any intentions to date her again.
Bro: Dude! I totally got a steaming piece of X-Pie from Jessica last night. Dude: No way. I thought you two were donesies? Bro: We totally are. I just thought I'd grab an extra slice. Dude: Noice.
