Very hard

After a few seconds, you build up the courage to ask her for a very hard squeeze, despite how painful you know it's gonna be. "Just squeeze hard, like very hard." You tell her, trying to keep your nerves hidden and under control.

She looks caught off guard by your request. "Very hard? Are you sure? Do you have any idea how much that's gonna hurt?" She looks at you, checking to see if you are actually sure.

"I know, i just... Wanna try it." You respond. "I know i won't last very long, but i still wanna give it a shot."

Her surprised expression suddenly turns into a smirk. "Alright then, but don't say i didn't warn you." As soon as she finishes speaking, her hand suddenly squeezes your balls extremely tight, constricting them in a vice-like grip. You double over as you loudly groan at the agonizing pain radiating from your balls, gritting your teeth as your hands unconsciously grab her wrist.

"Tap out already?" She asks in a playful, teasing tone.