This reminds of the time when I was sex ed teacher and was teaching the students on how to really fuck/be fucked by someone. Some of them wanted a demonstration so 1 of the girls volunteered to be railed by me. We both had stripped and the class was amazed by my size. But also, some of the boys wanted to know what a 3 some would look like. So I said that 2 of the boys would have to come up and strip, so they did and also had impressive bods and sizes. Then, we got to fucking, and everytime i would have to demonstrate something because they would keep asking for it.