rerr
The act of cupping ones own testicles after stepping out of the shower and jiggling them to make a quiet slapping noise.
Bro I just rerred the shit out of my balls.
rerr-terr-terr
A made up word, when you don't have the vocabulary to explain exactly what you mean.
"I was in the pub and trouble kicked off, so I had to step in... Rerr-terr-terr, rerr-terr-terr, rerr-terr-terr, got arrested for being a batty fish.