Stomp

Laura looked down at the quivering fetal mess beneath her, then, carefully placing her foot on fetal boy's hip, she cautiously pushed down with her weight forcing Paul to turn onto his back.
The momentary relief of hearing his sadistic classmate's departure was replaced with sudden terror as he meekly looked up at the titillated smile of his new, more experienced tormentor, with quivering hands tightly clutching at his groin.

'Move your hands boy!' the young girl barked sternly, legs wide with her arms placed on the hips.

The tortured boy's gaze moved down from the girl's demanding face towards the visible space beneath her skirt, slightly dampened panties clinging to her smooth crotch. He wondered for a moment why someone without such **** organs is so intent on torturing his own, how could they find so much pleasure by bringing him so much pain, the kind of pain they could never experience themselves - but maybe that was the reason, and that chilling thought petrified him.
Terrified of the possible repercussions of defying the young vixen who could turn her whimsical playtime into something even more painful and terrible, the emasculated boy hesitantly moved his hands to the sides, locking his tear-stained gaze on Laura's upskirt, the previously arousing sight now mixed with confusion and envy.

Laura stared calculatingly at the exposed boy-parts presented by her compliant play-thing, now swollen large enough to rest achingly on the carpeted floor, eager to enjoy the sensation of those firm eggs squirming desperately underfoot, recalling from her previous experience the rubbery resistance they defiantly offered when crushed to the brink of rupture.
With a shrug of thoughtless indifference, she stomped down on the boy's aching nuts, watching the testicles spill out to both sides as they compressed beneath her dainty foot.

Paul released a high-pitch squeal for the first time since his capture, resonating off the cold basement walls loudly enough to carry passed the the playroom, but the mechanical sounds of the elevator carrying his departing classmate drowned out any hope of attracting outside attention. The trapped boy's shaky hands stretched weakly to grab the vicious girl's slender ankle but with no strength left in him, they flopped powerlessly on his sides.