junkalanche Share definition Flag Junk + Avalanche. When a large pile of stuff falls and envelopes around something or the unfortunate someone. Person 1 - Watch out! a junkalanche!!! Person 2 - (gets covered in stuff) junkalanche by Thomas E Light January 12, 2018 0 0 Get merch Get the junkalanche mug. Buy Now — $32.95 See more merch