lavalanche 

A major slide of hot molten rock down a sloped surface.

The clouds of ash and cinders from Mt. St. Helens were dangerous enough, but it was the lavalanche that really spelled disaster for nearby communities.

lavalanche by QuacksO July 28, 2019

Lavalanche 

The act of taking a shit, and drilling a cavity into the shit with your penis. Then, you cum in the cavity, and you, or your partner consume it in one bite.

I heard Andres had a lavalanche last night.

Nick got sick from too much lavalanche.

Lavalanche by Varv September 30, 2012

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

avalanche blasting 

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."

avalanche blasting by canal treatment January 14, 2017

Anal Avalanche 

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.

Anal Avalanche by Tee Cee Deez February 27, 2019