As they get up to get off the ride, both Josh and Tom gasp and stagger a little as pain and pressure hits them in the crotch. Walking is almost impossible - it feels like thier shorts have shrunk 6 sizes,and neither 12 year-old has ever felt pain down there before.
Josh yanks at the fly of his shorts, which pops open to reveal a heavy black sheath and testicles the size of tangerines. His penis is inside the sheath, and starts to push out as a mottled pink and black shaft with a curiously flat end. Tom stares, but then has to do the same to relieve his own pain. He finds similar equipment between his own legs, though his is pure black.
The two boys are still standing there, shorts around thier ankles and what is obviously the sexual equipment of stallions between thier skinny boy's legs, when the next group of riders approach the car.