The cactus effect

Term to refer to a mans balls after recently being shaved, when the small prickly hairs begin to grow back and poke his penis as it hangs over them.

Guy: Damn, I got the cactus effect. Should've shaved better.
Guy 2: I know, that shit sucks. Feels like tiny needles stabbing your dick.

by PurplePagan June 07, 2007

Cactus Effect

The cactus effect is the feeling when you've newly shaved your balls and your sack stings your penis.

"Man, I've got a really bad cactus effect now."
"You've shaved your balls wrong!"

by D-bed December 18, 2011