Top definition
Posko (or POSKO) is an acronym:

P: Piece
O: of
S: Shit
K: Knock
O: Off

The word was derived from a guitar in terrible shape. Scratched, terrible strings, and sounded like a dying rabbit was calling out of the amp. However, a custom made humbucker, blue steel strings, and a 5 way tone switcher fixed that. Now the word is used to describe any knock-off of popular merchandise.
That playsystem 3 is such a fucking Posko.
by tic-tak June 07, 2009
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