sandpaper effect
The resulting effect of walking after recently shaving your public region. The feeling and sounds is akin to sandpaper being rubbed against your genitals.
Joe: How's it going?
Andy: Bad. My crotch has got a real bad sandpaper effect going. I shaved my pubes last night.
Andy: Bad. My crotch has got a real bad sandpaper effect going. I shaved my pubes last night.