The act of two individuals eating excessive Mexican food or other gastro indecisive foods, and holding back the urge to diarrhea, and instead diarrhea into a pillow case and proceed to have a pillow fight
Tom WTF happened in the apartment last night?! It looks like someone pressed their ass against the wall and let it rip! Tad and Rich had a damn Rocky Mountain Sludge Fight in the apartment last night!
by GreatWhiteChief November 19, 2022

The act of receiving head on a bumpy road while having the sunroof open, as the make ejaculates, pulls her head away and shoots his load out the sunroof while simultaneously hitting the breaks, landing the load on the windshield then using it to clean his windshield
by Dirtymikeandtheboys May 13, 2014

The Rocky Mountain Tumbler is when you just get done boning a girl... and then you KICK HER DOWN THE STAIRS!
by idungasec ukpong April 14, 2008

Where poop comes from.
by BoogerBear June 23, 2008

Obese skanks that hold down the rocky mountain territory. Often seen eating Dairy Queen and wearing clothes that are way too fucking small for them. These trifling skallywhops are known for there professional roofy and rape tactics. Victims more often than not commit suicide after waking up next to a rocky mountain thunder pig.
I was gonna get some dairy queen until i saw the line..a fucking heard of rocky mountain thunder pigs!
by K.O.L.E. MT 406 May 11, 2012

When you are having sex with a chick and you mouth-fuck her till you spew then punch her in the face afterwards causing her to spit the jizz everywhere, ie, like Rocky Balboa getting punched.
I love my girlfriend, I gave her three rocky balboa thunder punches and she still wanted to eat my dick.
by Poondog69 May 1, 2011

by amanda November 7, 2003
