assvalanche 

A large quantity of something, similar to an assload.

I just ate an assvalanche of pizza.

assvalanche by assman17 August 29, 2009

Assvalanche 

Prolific and violent diarrhea.

I shouldn't have eaten those three month old baked beans. I'm not sure your toilet can handle the incoming assvalanche

Assvalanche by Heinous_Anus September 1, 2009

assvalanche 

A contingent of people mooning someone via the snowball effect, starting with one person and gradually expanding one at a time until the entire group is mooning at the same time.

The name is derived through its literal meaning: an avalanche-like effect of asses being exposed.

"The whole group mooned me! It started with one person, then another joined in, and then another...it was a total assvalanche!"

assvalanche by The Assvalanchist August 30, 2009

Party Avalanche

When you haven't been to parties for a while due to excessive studying/work.

Finally, you go to a party but it triggers the urge to party ALL THE TIME. Usually subsists after a week.

Student: Have to study hard. Gonna get that Ph.D.
Dude: You're going to Jenn's party tonight.
Student: OK. I suppose it won't kill me.

-1 week later-

Student: YEA PARTY AVALANCHE! I haven't been home for a week! This rounds on me!

Party Avalanche by T. Polkinghorne July 24, 2009

Penis Avalanche 

The result of a crappy band name maker, Penis Avalanche is the name of the dopest jazz band in the northern hemisphere. Playing hit singles such as "Trunk of the Pussy Spray" and "Fuck Mel Gibson" the band has quickly gained success as the number one band in Albion, Washington.
The band has since broken up, and reformed so often, that most of the members have no longer play an instrument and instead stare awkwardly at each other for the better part of 12 hours while watching hipster music videos on Youtube and making fun of their poor bass player.

"I can't wait to see the Penis Avalanche, I heard they've reformed again!"

Penis Avalanche by FuckMelGibson August 6, 2013

Swiss Avalanche 

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.”

Swiss Avalanche by caseykills November 23, 2018

assalanche 

First defined in NASIOC's Off Topic forum by Kaiser as the slow, crampy, painful, and excruciatingly long build-up of poo in one's bowels, which finally reaches a breaking point and results in a massive avalanche of crap being explosively expelled from one's ass. Hence, assalanche.

Zeke sat miserably on the toilet for 30 mins with bad stomach cramps -- a half hour cycle of cramping and loosening and cramping and loosening tearing at his abdomen. But, frustratingly, no poo was shat. He suffered wave after wave of pain...until, finally, that last little snowflake fluttered down on 500 billion tons of brown snow. The assalanche came without warning, and it was fierce. Many people in Toiletville were caught unaware and perished in a 100mph rush of furious poo.

assalanche by Zeke Brown June 10, 2007