It is when you have diarrhea and you eject your watery feces all over your partner during intercourse. The diarrhea has a muddy appearance and is slippery (like a slip ‘n’ slide) which is why the term “mudslide” is used.
by David Cantonicle September 19, 2006

by Postal Dude August 7, 2006

Drink made with Patron Cafe and Monster Mocha. Adding a shot of patron silver makes it a Dirty Sanchez.
by Kirby68 September 11, 2016

Having vaginal intercourse with a girl on her period. Followed by anal sex with a penis still covered in period juices.
"My friend got weirded out having sex with a girl on her period, so he flipped her over and gave her a crimson mudslide"
by Hugh Gass August 31, 2005

when you flip someone upside down so the asshole is facing the sky, you then insert the top of a full bottle of vodka (open) into their ass and let it all flow in then flip them back upside right and let it flow back into the bottle, the recipient then proceeds to chug the whole bottle and then gets ass fucked for the next 4 hours.
jack: "hey jim, wanna go to the course and swing some clubs today?"
jim: "nah man, i cant, my girl and i did the russian mudslide last night and i still cant stand straight"
jim: "nah man, i cant, my girl and i did the russian mudslide last night and i still cant stand straight"
by Reatterd March 26, 2021

by Big dong6969 October 26, 2022

A Siberian mudslide can be performed via multiple sexual positions and among both heterosexual and homosexual partners, however doggystyle is the preferable position for maximum value. It is also recommended that you ingest a large helping of horse laxatives approximately 30-40 minutes before sex. After ejaculating onto your partner's back (preferably as high as possible without entering the neck area), quickly point your anus onto the semen that you've just laid and defecate as much as possible before your partner moves. Your partner will quickly realize what is transpiring, causing him or her to quickly jump up, thus causing the whitish-brown semen feces explosion to slide down his or her back, thus resembling an icy mudslide in Siberia.
Mike 1: Yo you'll never guess what I did to my wife last night!
Mike 2: Dude what???
Mike 1: I took 30 grams of pure bear laxatives, came on her back and gave her a good old Siberian mudslide.
Mike 2: Dude no way, let me get some of those laxatives and I'll try it tonight!
Mike 2: Dude what???
Mike 1: I took 30 grams of pure bear laxatives, came on her back and gave her a good old Siberian mudslide.
Mike 2: Dude no way, let me get some of those laxatives and I'll try it tonight!
by Mike and Mike the Accountants February 10, 2017
