Drop and stomp

You dig your fingers into his nuts for a few more moments before releasing them, which caused his hips to slam into the floor. You giggle as you hear his heavy nuts slap against the floor, splashing some water up and eliciting a cry of pain from your stepbrother. Unfortunately for him, you weren't done quite yet. He was laying face first on the floor of the shower and couldn't see you, so you planned to give him one last surprise.

"Yay! Now I can practice what to do when my assailant falls down!" You shout in glee, while raising your right leg high in the air, foot positioned right over his swollen testicles which sat nicely between his thighs.

You bring your leg down as hard as you can, feeling the ball of your foot connect hard with his nuts. You feel them compress, trapped against your foot and the hard floor of the shower. With no where to go, they simply kept flattening centimeter by centimeter. You could feel more and more resistance from the squishy orbs with every passing second and every centimeter they flattened. You wondered just how flat you could squish them if you really tried.

"PLEASE STOP LUCY!! YOU'RE GUNNA BREAK THEM!!" Alex cried out from the floor, trying to squirm back and forth to free his precious baby makers. He could feel the very core of his manhood flatten under your foot as endless agony coursed through his body.

"Aww lighten up Alex. I'm not going to break anything. Just practice self-defense! You boys are always so protective of these things" You lift your foot off his nuts momentarily, before bringing your heel down on his left nut as hard as you can, enjoying the bounciness of his nut. This earned another shriek from Alex who was now reduced to a sobbing puddle of boy pain.

"Well, I'm satisfied for now. Enjoy the shower!" You giggle, exiting the shower and leaving Alex to moan and whine about his poor balls. As if you cared.