1 definition by DefinitionGuru3597043057293

Top Definition
Sick-o originated at or was at least popularized in Oakville, Canada. It's variations include sick-ass. It has the same meaning as sick, only slightly better.
Yo man, that concert was sick-o!

Cheerleading is sick-o!
by DefinitionGuru3597043057293 August 08, 2005

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