Sherry asked if I wouldn't mind spotting her while she lifted some weights on the bench. I hopped off the treadmill and stood over her as she did abou... ten reps. I have no idea how much weight was on there, but I could barely help her get the bar back on the stand. It was pretty neat to watch her bare body tense up and veins pop out with every thrust. I had no idea she was this strong.She picked up some barbells again, and handed me a couple of the smaller ones, and asked me to join her. It was. I was surprised to hear that boys had a thing that was meant to go inside girls and that they only had the one hole for peeing and sexing. From the description of some of the boy’s things I didn’t see how one of those could possibly go inside me. I had of course discovered my clitoris and had been guiltily masturbating quite regularly but it was obvious that anything larger than my finger was not practicable, especially the huge things the girls were boasting about.A lot of the talk was about. I sucked him off as he rocked his hips thrusting himself into me treating my mouth like a pussy, I played with his balls as I sucked him off, I felt them tighten and knew he was going to cum, I sucked him harder and faster as sure enough he erupted in my mouth filling it with hot sticky cum. I swallowed as much as I could but couldn’t swallow it all as some ran down my chin dripping onto my big tits. The last guy pulled me back into his lap and massaged the spunk into my stiff nipples. His cock. “Now Cathy, going to cum,” Tom grunted as drops of pre-cum oozed from his cock.Cathy leant over and buried her face in his lap, sliding his cock deep into her mouth. She felt a thrill as he took control of her movements. Holding her head, he fucked her mouth hard. To her it was a form of bondage, one in which she was a cum-dump, totally there to serve the throbbing cock forcing its way down her throat.As Tom revelled in the feel of her warm, saliva-filled mouth milking his cock, he pushed two.