You're upstairs in your room having a nice afternoon jerk off session when your sister's hot goth friend comes walking in to ask if you want to go to the store with them. You are both super embarrassed at what just happened, but she can't help but swoon over just how HUGE your dick is! She is shocked and never would have thought you had a cock like that. After a short back and forth she ends up on her knees sucking your dick, and eventually hopping on for a quick ride before letting you fill up her mouth with your cum.