Top definition
When you defecate on a woman's chest and then jizz on her face. When she gets up, both substances will begin falling down, creating the image of an avalanche, but with some chunky bits.
George W. Bush: Hey pop! I totally just gave Hillary a chunky avalanche!
Bush Sr.: Good work boy! It'll take her at least 4 showers to get THAT off!
by Shmelvinwaka October 28, 2009
Get the mug
Get a chunky avalanche mug for your friend Paul.