Dave flexed at a regular tempo, achieving the bouncing Julie had ordered.He felt Sarah shift slightly and then each of his taps was causing Sarah’s ...ody to jerk slightly. He must be on target for her clit. There was no way Dave could keep this up long without climaxing.“Rub my clit,” Julie now demanded of Sarah.“Do you ever leave the house without panties?” she asked.“No, Mistress,” was Sarah’s breathless reply.“Too bad. Just think. Without panties right now you could be feeling Daddy’s cock. "Shells, it's me," I said, putting my hand on her shoulder. "It's Chuck."She gave me a look that seemed in indicate she felt I was due for a majorpsychiatric evaluation."Yeah, I know it's you, Chuck. We came to the party together, remember?"She started to laugh, possibly at whatever lame joke I was pulling. Thenthe look on my face must have registered and the cackle died at the firstsyllable. "Oh... oh shit."I nodded. "Yeah, oh shit is right. I just got back. Well, I got backabout thirty. ?I see. You are only interested in furthering the cause of science, and nobly contributing to our research. This is a very serious offer, Mr. Callahan. We are not interested in bringing someone in only to have him bail out on us. Our toilet will be designed to fit our subject's body, so we wouldn't be able to just??Oh no, please! I am very serious. I understand how stressful this whole thing will undoubtedly be?Oh no you don't! You have no idea, Mr. Callahan. (I could hear a chuckle) Really! No. I froze. I could feel my penis swell."Oh crap, now I could feel Lamar's huge cock touch my ass" I said, "I was just k**ding."Before I could run, Lamar's big hands were around my waist. I didn't know it but he was already naked. How did he get his clothes off so fast? Before I could protest, Lamar's large penis was sliding into my ass. One of his hands covered my mouth so I could not scream.To my surprise, the head of his penis was already inside. My fingers and toes started to tingle as his.