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It's when you have some really good weed and want to roll a joint but need some filler material to soften or dilute it so you mix in some shitty weed (known as snicklefrits, from the movie Pineapple Express) to make a "spliff" of part good, part bad weed.
Yo dude, is this whole joint that good shit you got last week? That would be too much!

Naw man, I mixed it with some weak ass snicklefrits, had to make a snicklespliff!

by Crazy Rib June 06, 2011