When a man stands behind a bald person on their knees and slowly cums on the top of their head so it will run down the persons face, like an avalanche runs down a mountain.
“Man, I want to Swiss Avalanche on Amber Rose so bad.”

Wife: “Honey, the results are back. I have Cancer. Now, we can finally Swiss Avalanche like we’ve always wanted to.”
by caseykills November 24, 2018
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The act of placing a generous amount of cocaine in one's asshole and snorting it as they fart in your face.
Bro 1: "Bro you look high af, what are you on?"
Bro 2: "Bro some hooker totally got me into avalanche blasting."
by canal treatment January 14, 2017
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A term used to describe a males load that flows out of the anus area when a certain amount of time has lapsed after intercourse.
I jackhammered Karen in the ass last night, and as she stood up to get out of bed, there was an Anal Avalanche that ended up all over the place.
by Tee Cee Deez February 27, 2019
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To ejaculate in a woman's hair and then throw her down a flight of stairs.
"That chick took the Mexican Avalanche like a pro-skier." or "I Mexican Avalanched her twice and she still came back for more."
by Big Deezy February 21, 2003
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When you cum on a girls face, slap her with your dick, and push her in a pile of snow
Frosty the Snowman liked to give Alaskan Avalanches to kids when their parents aren't looking
by mik297 September 22, 2009
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while the girl is sleeping next to you, you start jerking yourself and right before you cum, you waker her up and unload all over her face, catching her by complete surprise. just like an unsuspecting skier.
i gave my sister in law a dirty avalanche on her birthday.
by Mondo91 May 19, 2008
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