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.
Apparently getting your dick hard for a hot pornstar isn't as easy as you'd think. I'd probably blow my load before even getting my cock out of my pants.
This marks the return of the emotional orgasm slut, my personal favorite. Nothing excites me more than watchin that black sausage destroy her ivory cooter.