by SiK June 05, 2017
COI is an acronym for "Choke on It"it is pronounced like the the Koi fish. Used like lol or ttyl on text messages or email. namely towards ex-girlfriends
As she frantically scrawled out words to verbally batter him, his only and final response "COI". Huh? she texts backs its "ciao" Learn to spell. "COI" it right he think to himself.
by SiK June 11, 2017
A metal band out of Tampa, FL consisting of only one member. Still, they are able to play kick-ass music and have an ever-growing fanbase.
by SiK October 11, 2004