1) To shit a someone's mouth while receiving a rim job.
2) To have a ballrotate around a hole as if it was going to go in, but then suddenly it "jumps out".
"You better get outta there or I'm gonna rim out."
"Dude Sally was giving me a rim job last night and I rimmed out all over her face!"
"I almost sank a 30 foot putt, but then it rimmed out."
By Codi
Rim-out
When you're taking a shit after days of constipation, and the density and velocity of the exiting fecal matter tears the anal tissue to the point that a suture must be used to repair the flesh
Oh man, I housed those cheese curds a few days ago - and of course I'd rim-out right before my date. Good thing she's a nurse!
