When you cum on a girls face, slap her with your dick, and push her in a pile of snow
Frosty the Snowman liked to give Alaskan Avalanches to kids when their parents aren't looking
by mik297 September 22, 2009
2 more definitions
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 08, 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.
Last night, while i was banging Sherry, i totally gave her a gnarly Alaskan Avalanche.
by CuntMonster69 May 24, 2010