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1.
noun: Frozen rain that sneaks up on you unexpectedly and beats the crap out of you only to leave quickly, without a trace. Also see: hail
The ninja snow totaled my car today! My Miata looks like a golf ball!

I was walking through the park yesterday when I got attacked by ninja snow. As soon as I got to shelter it was gone. Turned out to be a sunny day after that. Weird...
by grisslebone April 06, 2011