I sat back on the edge of the bed and Sheila pulled my pants and underwear off my legs. As she slithered up to my cock she pushed her breasts still in...her blouse together and then released them as I looked at them. She took my cock in her mouth with out touching it with her hands. She really seemed to know her way around a cock.She worked my cock like no woman had before and it wasn't long before I felt the twinge of orgasm in my balls. Sheila must have sensed it as well because she let go of. The girl on the bed took hold of me and started to kiss me. So here I am tonguing this girl who turns out to be my sister and I was getting very turned on.I felt her body and though I felt it to be underdeveloped (most probably due to the fact that she was still in high school) it was still the curvaceous smooth body of a young girl. Her breasts were the size of your average snowballs and her ass was extremely hard and firm. Of course thinking that something may have been off with this chick I. Small streams were running down my legs. As he watched the wetness stream down, making marks on my jeans, his arousal was growing extremely. He couldn't resist from touching my pussy. Suddenly he was rubbing my pussy through my jeans. As he massaged my hot, wet pussy, my urge became more urgent. I couldn't wait... I was so full, so horny... I wanted him right there right now. Just thinking about having him, pushed me over the edge. I lost it. Without any notice, my hot juices were exploding out. Lisa was not far behind and the dogs were still ramming in and out of them without slowing. Susan could feel the base of the dogs cock start to swell inside her pussy causing her third orgasm. It filled her pussy and the dog slid off of her turning so that it was ass to ass with Susan. Susan looked up and saw the dog that had been in Lisa had also tied and had spun ass to ass with Lisa. As Lisa shook uncontrollably she know Lisa has had her third orgasm too. The dogs cock pressed.