by mik297 September 22, 2009
Before busting a nut, you pull out and finish on her chest to where it runs down her boobs, just like an avalanche running down the mountain.
I was having sex with my girlfriend last night and I decided to mix it up so I gave her the Alaskan Avalanche.
by Alaskaman89 March 09, 2010
Right as you are about to seamen in your girlfriend's hairy vagina, pull your dick out and cum in her bush. This will create a model of an avalanche.
by CuntMonster69 May 25, 2010