look up any word, like cunt:
 
8.
the new thing to call someone deep and hard to figure out. someone who thinks about things, analyzes every little situation with great care and detail. insomniacs are often thinks.
joey: you look tired.
child: i was up till three a.m last night
joey: why were you up till 3 A.M last night?
child: i don't know. i was thinking about things.
joey: god your such a think.
by ranikins94 February 09, 2008
 
9.
See Think, Thank, Thonk
Please look up Think, Thank, Thonk
by George Payne April 10, 2008
 
10.
A term used when you are caught masturbating
Mum: Robin! what are you doing?!

Robin (breathlessly): GET OUT MUM IM JUST HAVING A GOOD LONG THINK!!!
by Spunkmuffin March 01, 2010
 
11.
the thing that the person reading this cant do.
person 1: whatcha dooooin'?

person 2: im on urban dictionary.

person 1: dumbass. you should think about what youre reading
by ray-challe August 24, 2006
 
12.
A word used by many people to degrade a woman who has a bacterial infection, a yeast infection, or is on her period and it is "noticed."
Usually it is done in a sly manner and said when "thank you" should be said, but people will shorten it and turn it into "think" instead of "thanks."
by TheThinker February 26, 2007