Meet your new idol. He's got more visible STD's than a Compton crackbeast and still manages to pull bitches with ease. This particular skank is a prime example. She sucks his cock as if those warts are Summer fresh blueberries. GAG.
He seems pretty happy about his achievement. Try doing the same thing again except next time stick your cock in her ass first. When she comes up to blow you she won't gag, she'll just puke. It's called "ass 2 mouth". I invented it.
This seems to be one of the rare instances where a woman can orgasm with little or no physical stimulation of the genitals. In this particular case, it looks like the deepthroating and/or gagging is what's triggering her orgasm.