1 definition by josh retepopo perry preteen

Top Definition
the sweat and muddy goo you get in your Kroc shoez when your sweating out in the wilderness. when you run it usually is slippery and when you run ANCLE TWISTA mannnn.
yo dude i was campin with boyz scouts playing tag with the mother squirrels and i looked in my sweaty Krockz shoes and i was like EWW some sierra up in this shoez.my mother squirrel had to powerwash it thats how much sierra was caked in it.
by josh retepopo perry preteen March 13, 2009

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