A twink's eyes widen as he catches a glimpse of a muscled jock twerking in the gym. That big, round ass, jiggling and bouncing, is too much to resist. He steps closer, his breath hitching as he grabs those cheeks, feeling their warmth and firmness. The jock, sensing the twink's hunger, grinds harder, pushing back onto the twink's stiffening cock. The twink, losing all inhibition, slides his dick between those cheeks, fucking that ass through his shorts, the jock's moans encouraging his eager thrusts.