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.