look up any word, like fleek:
 
8.
anyone or anything that is ugly, raggedy, slump or cheap
dont look at me with yo crusty ass !
by k.whitee March 15, 2011
 
9.
It's the old dried poop stain in your britches or on your ass that flakes off onto the toilet seat when you drop and squat.
Dude, you better use the other bathroom- Paulie just left crusties all over the seat.
by Tommy and Jim April 15, 2011
 
10.
a word describing someone who is stale, salty, cranky, grouchy, grimy, crispy, crunchy, prickly, crotchety, crabby all at the same time; devoid of a nut. Someone who is crusty can only be cured by the following: 1. Get his/her nut 2. eat uncrustables 3. Throw a lip 4. rip cigs
Brian was crusty when he had to pull Natalie's dagger out of his back. John's sunburn inevitably led to him being crusty the whole night. Brian you're going to need to eat some uncrustables, because you are so crusty right now. When Erik and Conor are crusty, the result is beef. Conor was so crusty when his nut was unfulfilled.
by MPM38 May 12, 2010
 
11.
The most fantastic versitile word in the world, can be used to describe something that is actually crusty and disgusting, as well as fantastic things that are so amazing and crustacular
"ewww that pile of dirty dishes in the sink is soooo crusty"
"wow we need to clean, our house is geting crusty"

"OMG I LOVE YOU CRUSTY GIRL!"
"you are the crustiest person i know!"
by doggiestyle23 August 27, 2009
 
12.
a weird/creepy person, or someone who is a bit 'crusty'.
that man is really crusty
by bottisham people October 23, 2012
 
13.
A word often used at Pontiac Township High school:
To describe a lower class person, (Offensive) Someone who can't afford (Or just doesn't want to look like a TOOL) Aeropostal, and or Abercrombie, Hollister ect. Someone who looks as if they never bathe.

Someone who you assume smells, although you're always dodging them in the hallway for fear that your nostrils will fill with their putrid sent.

A word created by people who are, for lack of a better word, insecure about themselves.
"Oh, dude. That chick is so crusty!"
"Why? Just because she can't afford douchebag clothes like you?"
"Exactly."
--
"That's crusty."
--
by Michael Pottttts February 17, 2011
 
14.
Undercloths that have been soaked with sperm either from repeated coitus(not likely) or self masturbation (oh yeah)
Dang Jim you better lay off the pipe. Your crustys are getting rank!
by Rightous Willy January 31, 2004