Школярка, яка дражнить член, трахає свого щасливого репетитора з великим членом

Hey, thank you Mr. Hunk for the calculus lesson today.

I'm really starting to learn about the derivatives.

It makes me feel so much better, all thanks to you.

Well, calculus is pretty hard to get, but once you get rolling with it, you'll start

to catch it.