Rounding up a large collection of niggers and pushing them down a hill/steep drop.
"LOL I started a mudslide over the grand canyon yesterday"
A mudslide is when your close friend or grandmother reclines on the floor with plastic wrap over their face and you squeeze off a poop onto the plastic wrap. The poop slides off your grandmothers face just like mud off a hill.
Derrick paid me 20 bucks to give her a mudslide last weekend.
When a man has anal intercourse with a partner, using that partner's diarrhea as lubrication.
Dude, Darragh gave guy a mudslide, there's totally diarrhea all over his cock... what a homo!