Mel's cocking off my ass was if anything more painful than Alan's because while the girth of Alan's cock had torn my sphincter, Mel's cock had to pass...this and being much longer hurt me rather more inside. Fortunately his rather rampant thrusting and probably my squirming with pain soon brought him to climax and I felt him deposit his soothing ejaculate deep inside me.As he withdrew Alan wasn't showing much sign of coming off so I really went to work on him with my mouth and hands on his cock. Frank was downstairs watching TV while her father went back to his study with Nicole, which gave Angie time to think. What frank had her doing, what Angie was sure her brother would want again, went against everything society taught. She tried to think of some way out of it, but the problem was, she really didn't want to. She wanted Frank as much as he wanted her.Angie was organizing her drawers when she heard the TV go off downstairs. She held her breath and a then released a sigh of relief. As I lathered myself up my mind kept drifting back to Pet, standing naked in the middle of hir living room in that parade rest stance, a study in perfection, the ultimate expression of both sexes in a single being, just waiting for me to give hir an order, my own personal sex toy ready to do my every bidding.By the time I was fully lathered up my erection was back. What an idiot I am! Pet would have gone all the way, had sex in any position I could have thought up, he/she could suck cock like a. My objection died in my throat as I looked at my sisters erotic body. ‘Oh I think its fair you’re nude in front of me and I'm naked in front of you, besides it worked’ She was right I was at full attention now.‘What's that coming out of the top?’ she asked a while later ‘Oh its precum… it's like lube to help… uh during... ‘ ‘Oh amazing... ‘ she declared, rescuing me from the embarrassment my explanation was becoming. She look at the painting and said ‘Well that's the best one yet.. Maybe I.