Switch it a bit.

A few of the girls who were feeling you up decide they want to fuck you and the others. You seem to have your pick between a trim redhead, a chubby indian girl, a black chick with wide hips, blonde twins who look like they have huge fake tits, and a wild-looking chinese girl. As the circle fuckees disconnect from each other, the dick from your ass is removed and a large buttplug finds its way inside you. "Just in case we want to add to it later," one of them says. You are very uncomfortable, but you figure you can remove it when nobody is looking. It looks like the blonde twins and chinese girl are digging your current deformity, though.