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4.
Acconym for Cunt Of A Thing. Used to discribe an annoying person or object.
Turn that COAT off said Sean as the musical toy was driving him crazy.

Or That COAT Sally would stop calling me last night. she needs to get a life!
by Grant Wholey November 26, 2007
 
1.
A person of the opposite sex who, when attending social events, requires less maintenance than a coat in order for you to get them to come home with you.
"Liz is Rob's coat. When he goes out, he leaves her at the door and hits on other girls with his friends. But when it is time to go home, he grabs her at the door like she is his winter coat."
by Ted Blake June 26, 2003
 
2.
CUNT OF A THING
When someone/something has really annoyed you.
"My word he's/she's a COAT!"
"God this job is a fucking COAT"
by Cazbah September 27, 2005
 
3.
An acronym, C.O.A.T stands for Cunt Of A Thing.

This acronym was originally developed in the town of Melbourne, Australia in mid 2006 as a means of describing a strongly unpleasant, offensive, or undesirable female, or a female displaying qualities considered highly undesirable at a given moment.

The beauty of this term is its adaptable nature, and its subjective application.

Also, this term allows one to use a highly offensive term towards someone, in a fashion that does not sound offensive. To this end it is often found in use in offices, professional environments, and there is also one unsubstantiated account of this term being used in a Supreme Court towards the presiding judge.
"That Candace is a fair-dinkum COAT, isn't she Bryce!"

"I had to get out of the house for a while Brad, the missus is being a COAT..."

"I cant believe you baby; you are really acting like a COAT right now. Pull your head in!"

Her - "Youre such a bastard....just buy me an engagement ring already, it's about time after 4 years together..."

Him - "For fucks sake Candace, you are an absolute COAT...we're over bitch! Pack your shit and hit the bricks."
by K9GUY June 01, 2009
 
5.
Put it on your body to keep you warm.
by Anonymous January 20, 2003
 
6.
One of the coolest usernames ever. Coat is hardcore and awesome. Can be found on Gaia Online.
Dag, Coat is the shiz.
by Lynn January 24, 2005
 
7.
Liquor you sneak into a bar or club in your coat in the hope of getting fucking wasted. Can also be drank in the parking lot outside.
Chug that coat!
by drizzychenko March 01, 2011