Staring at her stupidly.

You just stand in place, perplexed, as she grabs you by your shoulders. The girl raises her knee with all of her might and your balls were literally smashed between her it and your pelvic bone. An involuntary grunt escapes you as excruciating pain makes you fall on the ground in a fetal position.

You ignore the world around you as you hold your palms to your crotch, hoping to reduce the pain, but the girl is not letting you recover. She turns you onto your back and you glance at her with tears in your eyes. She looks down at you like a bug.

"Apologize for your stupid prank, boy!"

You still have no clue why is she mad at you it doesn't matter now. All that matters is stopping this crazy bitch.