Your sister has generously offered to help you get rid of your virginity by scheduling a sex worker for you. But she doesn’t want you to embarrass her when you’re with this woman, so she’s going to give you a training session. First, you get on the floor. From that place you kiss and lick her wedge sandals and her feet. Then, she has you practice humping the ground. Of course your only experience is with jacking off and fucking is much different. She critiques your methods and humiliates your tiny little penis. You’re such a pathetic virgin. You’re lucky you have her here to help you with these kinds of things.