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17.
To be not one bit cool. To be like your loser uncle.

Syn: Tool
The thirty-five year old would always attend undergrad parties. He is a complete uncle.
by Brugz February 25, 2003
 
1.
Exclaimation meaning "I give up".
Say "uncle" you little baby! Say uncle! *Initiates wedgie*
by B3++y January 29, 2005
 
2.
The member of your family that is most likley to come into your bedroom in the middle of the night and show you his penis.
Uncle Bob: Hey Jimmy wake up.
Jimmy: What is it Uncle Bob?
Uncle Bob: I got a present for you, but it's in my pants. You have to fish it out.
by The Real Jink July 11, 2006
 
3.
a term used to make someone say when you have them pinned to the ground
Andrew: i've got you on da flo bitch. you want yo lunch money back, den say uncle

Alec: help, no! teacher teacher!

Andrew: say uncle!!
by Andrew Won April 09, 2007
 
4.
A respectful way to call someone especially if you are of the East Asian culture. They are not actually related to you.
Sanji: Uncle get me a steak and a currypop

Rajin: O.K.
by The Chocolate Leopard April 11, 2010
 
5.
The name you must call your mums boyfriend when you are little.
Uncle Les is the best uncle I've ever had!
by Rich Lawson May 27, 2005
 
6.
U nited
N ations
C ommission on
L aw
E nforcement
Man From U.N.C.L.E.

U.N.C.L.E. doesn't really exist -- or does it?
by Mike Cox November 22, 2006
 
7.
One more thing! *smacks you over the head with two fingers*
"Magic must defeat magic!" ~ Uncle
by qwerty August 22, 2004