anyone or anything that is ugly, raggedy, slump or cheap
dont look at me with yo crusty ass !
by k.whitee March 15, 2011
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
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
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
a weird/creepy person, or someone who is a bit 'crusty'.
that man is really crusty
by bottisham people October 23, 2012
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
When you just wake up and you're about to show the world your natural beauty. It's when you full on have crust in you eyes or the white crusty stuff on your lips and you basically look like a hot mess.
Amy, I'm soooo crusty on campus right now. Wearing the sweats and the greasy hair, I truly can't get crustier than this!
by jblooo February 20, 2014

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