"Ofgggrrrhhhh!!! That look means: "Don't you cum, big boy... Hold on, hold on, hold on, you can do it, you really don't need to cum. I want to keep playing with your big dick for a while..." (even though she already gave me galloped on top at length until orgasming several times...).; "If you ejaculate, stud, my fun is over, that's why you still don't have my Permission to cum"..."