Watch him cum again.

"Sorry," you say to the boy. "It's just too much fun watching you wanking yourself silly like this."

"You can't leave me like this!" the boy pleads. "Let me go, PLEASE! I'll do - ungh - anything!" You ignore his pleas for relief, while stroking your own stiff cock in your shorts. The room now stinks even more of cum and sweat, a heady mix that just makes you harder as you watch the boy stroke himself unwillingly to another mindblowing orgasm. He continues to plead with you, alternating with cursing you for leaving him to suffer like this, all the while pumping his fist up and down his sore red cock. After a while, seeing that you are not going to help him, the boy adopts a sullen silence punctuated by occasional moans and gasps. You watch as a second orgasm builds and the boy thrusts his cock up into the air, shooting another load of cum high into the air to splatter all over his neck and chest, adding to the sticky mess already coating his body. And again, the boy's hands simply continue to move of their own accord, beginning the boy's sexual **** all over again. That was fucking hot, you think to yourself.