Attack

The pain emanating from your testicles causes you have no remorse for what is about to come

As your sister moves in closer for another attack your give her an uppercut to her cunt

You can feel her dampness on your knuckles

When you retrieve your fist from her groin she falls to her knees as well

"You ass" she says "I was going to go easy on you, but now your balls ARE MINE"

"Remember all the times you smacked and kicked me between the legs?" you ask "Well now I'm going to pay you back for each and every one right now"