Top definition
ple'cost'o'mystic
name taken from the pleco fish. They suck algae from water.

-It is supposed to discribe someone greedy, sucks in money,eats alot, etc.
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there is also "plecostomystice" which is a magical pleco.
Person 1: "My job is so plecostomistic, they won't even let me eat free, or let me have any discounts."
Person 2:"Man that sucks."

by Amanda Mae February 15, 2007
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