Classmate after classmate they had fingers exploring their undies, touching their delicate skin underneat. The teacher continued, “Now that we’ve ...all had a good idea of what fully covering lace panties look and feel like it’s time to turn our attention to Andrea again. Andrea is wearing something different. Her undies do cover her vagina but they feature something extra too. Can I ask everyone to gather around and have a look?” The students got from behind their desks and gathered around. Neither of us wanted to put our dresses back on, we were enjoying the sexy liberation we were sharing. We started chatting openly about sex again. We asked each other more about what we'd each done with guys that we'd been with."Have you had it up the bum?" Me no, her yes."Have you been caught fucking outdoors?" Me yes, her yes."Have you ever kissed a girl?" Me no, her no.And so on and so on until it got late and she retired to her bed.That night I woke up in the early hours. I'd been sleeping. Twisting Janice's head around by her hair Ann kissed her sister forcefully while her lower body continued to thrust and grind the dildo into her back passage, my wife's cries were barely muffled by the joining of their mouths. I noticed vaguely that Ken was still filming everything Ann was doing to her sister, but my main attention was on the two women. Releasing her hold on Janice's hair Ann pushed her forward onto her hands, grasped her shoulders, withdrew the dildo to the point of almost. You’re amazing, Randy.”A flush of warmth, that had nothing to do with Livie sucking on my cock, washed through my body. “What’s your next guess?”“Um...” She squeezed me tight, rubbing her crotch on my ass. I could tell she was so horny. “A double-headed dildo.”“Looking to have fun with your older sister?”“I just thought you’d like seeing us having sex,” she answered. “You know, making us fuck each other. Since you like watching your sisters having sex.”“I do like watching my sisters having sex.