This Poor Slut has a D

Aaliyah goes to her favorite teacher asking
 for sex tips. She's never given a hummer before
 so she was looking for books on how to give
 good ones, but what's better than a hands on approach to learning. He's going to help her learn how to give a blow job worthy of an A, and might teach her a thing or two more while he's at it.

 
A little suck for a C

Show a little skin for a C+