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1.
(Pronounced by reading the letters individually, ie "S-Y-G-O")

An acronym used to abbreviate the term "Shit Your Guts Out".

Generally refers to situations in which one eats a slightly dodgy food, they suddenly get that "spiced ring" feeling, and then have no choice but to release a watery flow of rank poo into the dunny.
Dude! Don't eat that burger!!! Any food prepared by the deli up the road is guaranteed to make u SYGO!!
by Champski October 05, 2006