This set has a little continuity error. In the first shot, he has on briefs. But in the next shot, he's taking off his shirt but is wearing no briefs. The only way for this sequence to work logically would be for him to take off the shirt, then put on the pants. Or, he takes off the pants, puts on the shirt, and then takes it off again. But why would he do that in the bathroom?
Porn has lots of continuity errors but these really aren't porn. But who cares about all this, actually, because he's bloody magnificent. He can make all the continuity mistakes he wants and I'll forgive him.