dullboy just wants you to go into this exercise with full discloure and the knowledge that dp on a girl is boderline gay.
the issue is that you're going to be receiving direct sexual stimulation from your friends hard dong. think of the membrane between her hoo-hoo and her butthole as a lambskin condom.
I dont know Anyways im not sure if ill wind up going ahead with this. This is some crazy stuff..never done anything crazy like this be4. Im a pretty conservative guy realy.