Top definition
(noun) A (generally homo)sexual act in which one person penetrates their partner's anus as that person defecates, causing a power struggle between the two solids. Can be either intentional or unintentional. Takes its name from Madison, WI, the sjw capitol of the world.
Mark: Dude, last night I was super horny, so naturally I called up my fuckbuddy. He said he was down, but hadn't "gone" in a while. Long story short, I was too horny to care and ended up with a Madison Mudslide. That's like the third time this month!

Gabe: "He" is a trans-phobic micro-aggression. Please use the non-gender specific "they."
by Hamster's Hardon March 28, 2016
Get the merch
Get the Madison Mudslide neck gaiter and mug.
Apr 22 Word of the Day
When you eat dirt for the first time and leave your family to build a shack in the woods
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawn owning freak
via giphy
by ecogoth December 30, 2020
Get the merch
Get the dirtpilled neck gaiter and mug.