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.
by DefinitionGuru3597043057293 September 2, 2005
Get the sick-omug. Someone who lives in Maine and is, well, a Maine hick through and through. There smart if they have a G.E.D., and for some strange reason, have not pronounced the letter "R" in 200+ years. and, to whoever did the previous definition of Maine-o, there is no Red Lobster in Maine. Red Lobster is frozen seafood, is horrible, and exists in 49 states. Maine is the only Red Lobser-less state in the union. Weathervane is MUCH MUCH better because it isnt frozen
I am a maine-o through and through
by Massabesic April 17, 2006
Get the Maine-omug. by Nick-names January 23, 2009
Get the the big omug. 
emo wana be hardcore bands where there is the screaming singer, and the sensitive emo singer. it is the lowest of all genre.
by thatdamngoat July 7, 2006
Get the scream-omug. by that kid with the big one April 11, 2007
Get the O for 2mug. 