...hmmm...what kind of cheesecake????...hehe totaly jking...I choose the cheesecake. What's the point of buttsex? the way I figure it, it's only good for one person and if you want to stay a virgin then don't do anything!...if you do it you can't say you're a virgin you have to say you're a whore...sorry...
"The belonging you seek is not behind you, it's ahead."
--Maz Kanata
If they do, it's a totally psychological thing. There's no possible way a woman could physically be sexually stimulated by having something inserted into her rectum. The only physical stimulation that could occur is over-stimulation of the colon, which would result in uncontrollable bowel release, and that's not fun for anybody.