I'm a witch brewing a potion, and I need the cum of a willing virgin. I decide to ask you, my best friend, if you can provide it. You agree, but are a bit embarrassed that you are still a virgin. I tell you not to be embarrassed, and that I will talk you through it. When I pull your cock out I am surprised at how big it is! While helping you cum I tell you how I am surprised you are still a virgin with a cock like yours! After we are done, I promise to set you up with one of my friends as compensation.