When you have to release your fecal matter but have a sports practice, so you let it out in your compression shorts. Thus, creating a mudslide like environment in your pants with your own feces.
I had soccer practice after school and had no time to use the bathroom, so i ended up with a mongolian mudslide.
by Chet chu betcha September 13, 2017
The act of ramming a thumb up a female's anus while she is receiving oral sex. It is usually performed at the point of climax to intensify the "shock" and therefore "pleasure" associated with the climax.
Dude, while going down on my girlfriend last light, I gave her a Mongolian Spike just before she came. I thought she was going to loose her mind! She even spoke in tongues!
by Salty n Sticky December 08, 2009
My buddies girlfriend asked for an Eiffel Tower but since it was so cold we gave her a Mongolian Teepee instead.
by Motor City Mongolian December 13, 2020
by Skrimps February 14, 2020
You call on a friend that is not liked by your circle of friends, but is always around anyway. Get them really drunk. Find a dead girl (don't try at home) and place her freshly (1 to 2 days old is the best) dead body in a different room on a bed. Have several friends hide in the closet of said room. Tell your friend (victom) that there is a really drunk girl in the other room sleeping and if he orally pleasures her he is guarenteed a bit of "the ol' in and out." Now when you friend starts to get busy on her south bound action all you friends come running out the closet and jump on her stomach. This makes all her internal organs (or mong as it's called after death) come out her box and into his mouth! Hence, the Mongolian Buffet.
by yehudah October 11, 2006
A sexual act performed following anal intercourse, where the person who was being penetrated does a head-stand exposing his/her gaping anus and the penetrator sits atop the penetratee and defecates into their rectum.
The Mongolian Chimneysweep requires some degree of flexibility.
by The Grand MasterSmeat (courtesy of Scott) August 30, 2006
by Abby Foxhaven December 28, 2009