Initially she makes it pretty clear that she doesn't want anything in her ass. But our hero Johnny Cock Rocket uses the powers of persuasion and before you know it he's making sweet love to her festering cornhole. Not exactly fap worthy but if you're like me you'll fap anyway.
He tries to get her to say "you worship black cock" but she doesn't comply... so he thrusts even harder which leads to her having orgasmic spasms in a retard-like manner. Lovin it.
If your penis is insufficient, watch this video and learn how to give a girl an orgasm so big that she'll giiggle like school girl and love you forever. This would be quite a change for me, most girls just spit in my face after sex. They just can't seem to appreciate ass 2 mouth.