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.
ayon kay Son of Stone ika-02 ng Nobyembre, 2013
When a man ejaculates on a woman's chest while she's sitting upright. The sperm slides down the chest like snow sliding off a mountain during an avalanche.
I was going to give her a pearl necklace, but she said her sheets were new. So I gave her an avalanche instead.
ayon kay Likquid ika-25 ng Hulyo, 2010