you beg her

You feel ready to explode and you beg her -

"P..please miss... I beg you... let me cum... I can't resist anymo..."

You can't finish the sentence that she stops, still gripping your cock in her tight vagina, and then she grabs your balls, squeezing them with a discrete strength.

She looks at you and says - "Have you finished complaining or i have to squeeze harder?"