by UrbanFoxKnight October 22, 2009

by Crowdsurfer February 07, 2010

by Your local yog January 16, 2020

When a large man lifts up his stomach in order to receive a blow job and when he's about to cum he drops it on the girl so that she has no choice but to swallow.
Just as the fat man was about to cum he dropped his stomach on his unsuspecting victim and yelled avalanche.
by Anthony Joseph October 13, 2006

Similar to the snowball, an avalanche is a sex act in which multiple men ejaculate into a person's mouth and that person then kisses another, forcing all of the semen into the receiving person's mouth.
That bukkake party was going great last night, until Rachel got up and avalanched Dave. Dave will never be the same again.
by Son of Stone November 02, 2013

An act of Corprophelia in which one deficates at the highest point of a partner's body, that being the top of the head or shoulders, the goal being to create an avalanche of piping hot fecal matter down said partner's body.
by Scatman Crothers February 05, 2007

when you ejaculate on someones upper forehead and it rolls down their face like snow down a mountain
by Jason Brivens September 30, 2005
