A mud slide is when at least 6 males enter each other from behind, complteting a full circle. Every other male thrusts to the same rythmn, while their forward and backward counter part thrust to a diffrent rythmn. Women are allowed to particapate with a strap on dildo, as long as they are entered in the anus, and the dildo isn't obscuring that orrafice. One organization uses the mud slide to further humantarian causes (See mud slide for peace.)
CJ: "Hey jeff you wanna do homework tonight?"
Jeff: "No dude I'm going to go butt fuck 5 other dudes in a circle."
CJ: "You know that's called a mud slide right jeff"
Jeff: "Wait someone named this?"
Jeff: "No dude I'm going to go butt fuck 5 other dudes in a circle."
CJ: "You know that's called a mud slide right jeff"
Jeff: "Wait someone named this?"
by ninjer January 19, 2007

When a person has explosive diarrhea which is used as lubricant for a session of anal sex (aka. ass fuck)
by OSUDamian October 4, 2006

by Josh Mc July 20, 2006

by The chosen one # 2 June 21, 2009

When the lady lies on her stomach with back arched and the gentleman sits on her shoulders with the head of a turd sticking out (see turtle head). He then procedes to slide down her back with the aid of the turd.
by Andrew September 1, 2008

by Rod Pierce April 30, 2006
