Because he has already ejaculated in the scene but it was deleted. Then he goes for a second round. How do you think they last so long? That's why their shots are usually weak.
Never can understand why bruhs can't blast off all over a sistah's phat bubble ass after a big dick pounding like that. I'm glad I don't have that Problem. I fuck a chick with an ass like her from behind, my cum busters have hit them in the back of their heads, hit the headboard and definitely splashed a few walls. Oh yes...