As I wanked him, he returned the favour and began stroking me in my panties, mine gently like before but very firmly this time, our kissing had gone f...rom passionate to pure lust, we were probing each other's mouths with our tongues"Suck my cock" he broke off from kissing me and said with heavy breathI was ready now, I bent my head to his lap and poked out my tongue to lock the end of his cock, it was very sticky with pre-cum and I teased the head for a while, I wasn't really sure what I was. " Karen touched both areas of Jack's cock as she lectured. The assembled girls could see his stiff penis jump with each touch. "You can see at the tip the urethral opening from which the semen is emitted upon ejaculation," the woman continued, gently squeezing the tip of Jack's penis to cause the slit to open."I will now begin to stimulate our subject's penis." Karen continued as she closed the fingers of her right hand around Jacks cock and began to slide her hand up and down. Jack's cock. ..was just looking," I stammered pointing at the stand of hardcore DVDs."Why don't you go in and have a look around," she smirked nodding towardsthe lingerie section. I meekly followed her, my heart beating faster.Almost immediately I saw something I would love to buy displayed on thetop of a rack of lingerie. It was a hot pink PVC corset approximately thesame colour as my panties. She must have noticed my stare because sheheaded to the rack under the display. My gaze travelled around. I can't give up! Stacy works harder now and moves her tongue up onto Becca's tiny, swollen bead. She focuses there for a moment until Becca yelps, cueing her to slide her tongue deep inside the juicy opening. Closer and closer Becca and Cara get. Their laboured breathing and wet, heavy moans keep getting louder and more intense. Stacy extends her wild, luscious tongue further into her girlfriend's leaking femininity. She flexes it firmly and presses it as hard as she can up into Becca's puffy,.