Grip strength contest

"Grip strength contest?" Sarah suggests with a tilt of her head.

"Bet, i'm gonna crush you." Mary responds with a smirk.

"We will see about that." Sarah retorts.

You are confused about them suddenly deciding to do a grip strength contest until you feel their hands wrapping around your testicles. Before you can say anything, both of their hands clench around your balls in a vice-like grip. You groan and squirm in the bed, but their grips seem unbreakable. You try to get a hold of their fingers and pry them off, but no matter how hard you pull on them, they don't come off and remain clamped around your balls.

"So, who has the strongest grip?" Sarah asks, leaning in closer.

"Yeah, tell us." Mary adds, also invading your personal space.

"Girls please!" You beg, but it falls on deaf ears.

"No baby, we need you to tell us who has the stronger grip." Sarah states firmly, not backing down.