Rockalanche

The falling of large quantities of rock

The rockalanche buried three cars on the mountain road.

Rockalanche by Mttzzzz December 20, 2010

roofalanche 

A very large, heavy, deadly mass of snow falling off a large roof at once, destroying all below, and generally causing panic when the house shakes.

Hannah: Honey, what the heck was that?

Stanley: Ah, nothing.. go back to sleep, it was just a roofalanche. no worries...

roofalanche by horatio Vermin December 15, 2008

Rackalanche 

When a girl with large breasts is heading in your direction.

Alisha causes rackalanches everywhere she goes because of her enormous breasts.

Rackalanche by Fat King Cole December 26, 2011

Rackalanche 

When a girl with large breasts walks in your direction.

Alisha causes rackalanches with her massive breasts.

Rackalanche by Fat King Cole December 7, 2011

pockalanche

when you're looking in your pocket for something and everything else in there falls out

Sorry, I'll pick up all that pockalanche debris

pockalanche by fallrivermatt August 29, 2007

rock-alanche

synonym for "rock slide"

Savannah: "What if, right now, there was a rock-alanche?"
Matthew: "...avalanche? You mean, ROCK SLIDE?"

rock-alanche by iamawesome2891 March 29, 2011