Jerk off until he cums

You pump your cocks like you mean business, letting him cling to you as he trembles and groans. The pleasure gathers within you, heavy and searing, like molten lead, surging through your balls, churning low in your groin, building pressure, like an itch you desperately need to scratch. Your strokes get harder, faster, your breath coming in noisy gasps. You're almost there, but you hold back. You don't want to cum yet.

The human in your arms goes rigid, his hips jerking as he cries out, and you feel his cock throb as warm ribbons of cum spurt out, soaking your hand and stomach. A heady rush of sexual energy floods through you, filling your body. You feel stronger, your body slightly larger. Even your cock feels a little bigger. You stroke him through each of the shuddering waves of pleasure that wrack his body, until he pulls his overly sensitized cock from your grasp, his legs wobbling as he steps back.

"Holy shit!" he pants, looking down at the smears of white on his stomach and his slowly softening cock. "I had no idea letting a guy jerk me off would feel like that. I think I need to sit down." He lowers himself onto the cloak, running one hand back through his hair. He looks dazed. You sit down beside him, your stiff hard-on standing proud against your stomach. He glances at it, then at you. "You didn't cum?"

"Not yet," you say, giving him a smile full of dark promise. "I'm saving it for something special."

He blushes a little, but doesn't look nearly as shy as he used to. He notices the cum on your stomach and glanced down at himself, making a face. "How are we going to clean up this mess?"