Your tennis teammate knows that you aren't going to be able to participate in the tournament if your grades don't come up so she has come over to help you! She wears her practice uniform with the tight shirt and shirt skirt and all you can think about is legs, ass, and tits. (which is one reason why your grades have been suffering to start with.) So she agrees to go ahead and help you "Get off" so you won't have that on your mind any more and can concentrate on the tutoring she has come over for. She takes her shirt off and lets you look up her skirt while you jerk off and cum everywhere.