The act of getting your asshole licked while high on drugs, high up on top of a mountain or building, or, preferably, both.
Guy: "Since you are down there, I may as well get stoned."
Girl: "What for?"
Guy: "We are on top of a mountain and you are licking my ass. May as well make it a highland rim job."
Girl: "What for?"
Guy: "We are on top of a mountain and you are licking my ass. May as well make it a highland rim job."
by Ball & Oates August 2, 2012

Man, I was at the comedy club, and the restroom was right next to the stage where this dude was bombing, so I decided to spice things up with a salt rimmed taco.
by Whatisyourexcuse May 26, 2018

by Mary Hasek March 26, 2017

A randy rim-job is licking and sucking and sticking your tongue as far up a dude's asshole as you can until you make him have a rim-job-gasm and he blows his load.
by USAF Cadet January 14, 2021

In gay, Canadian, slang; to have forceful anal sex with an unwilling lab technician. taken from the popular Tim Horton's contest
by secretsleep August 19, 2008

Shawn: So, I heard that paul got revenge on his girl.
Dave: How did he do that?
Shawn: He got her with a Volcanic rim job.
Dave: That's disgusting!!
Dave: How did he do that?
Shawn: He got her with a Volcanic rim job.
Dave: That's disgusting!!
by Dirty roomie February 24, 2009

A sexual act in which you are giving a fat woman a rim job, and she stores water in her back fat rolls and dumps it on you.
by Birrox February 5, 2015
