You come into your step-sister Claudia’s bedroom to find her lounging on the bed in a thong and tiny little crop-top. She shrugs and explains it’s too hot to wear anything else – the A/C is still broken, and besides, shouldn’t you learn to knock? You can already feel yourself blushing even before you tell her why you’re there. She smirks, picking up on how uncomfortable you are and asks why you’ve come into her room. You explain you want to know how to make a girl cum during sex, before you hook up with your girlfriend for the first time. Claudia’s eyebrows shoot up. Haven’t you already started fucking her? She giggles at the revelation that it’ll be your first time and agrees to give you a little demonstration.