Shavalanche 

The act of one's rectum muscles relaxing so completely that feces flows out without any effort or control devastating all in its path like an avalanche.

ohhhh bro after eating that taco I was hit with a series of shavalanches all night long.

I got so pitted I shavalanched my pants.

Shavalanche by Shiavo August 19, 2009

Savalanche 

When Sav busts a load on your face and you fall asleep with it on. Then the next morning you realize it was Sav's jiz on your face, so you leave it on for the rest of the day for the world to see.

Half of Connecticut's female population is currently walkin around with a savalanche.

Savalanche by Jake88 November 10, 2008

Savileanche 

A rampaging group of peadophiles

"There was a savileanche outside the under-16's foam party."
"Did you hear about the four toddlers that got trapped in a savileanche on Friday."

Savileanche by Savileanche Paddy January 21, 2013

snavalanche 

A large amount of snot that comes out of your nose and gets all over your face/clothes/innocent bystanders when you sneeze.

1.) Man, this cold gave me a snavalanche so bad I had to change my clothes.

2.) Don't bring that cat near me unless you want to see a monster snavalanche!

snavalanche by THDaddy March 19, 2008