That “whopping”, smacking sound made by a dude’s balls and ballsack as it smacks repeatedly against a girl’s taint or butt cheeks during some vigorous sex. Position, intensity and type of penetration (vaginal or anal) vary the level of whop.

Whopping may also occur during a serious session of skull fucking oral with the smacking of the sack against the chin or throat.
My nuts are sore from ball whopping Rachel last night.

I think my mom could here the ball whopping coming from my room. I muzzled my girl’s moans by stuffing her panties in her mouth but I could do nothing about the beating of my mansack against her ass.
by Eaton Holgoode February 3, 2018
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