anything thats nasty, it could be a person, place, idea or object. This thing is such a disgrace that it reminds you of rotten dried crusty cheese. Basically anything disgraceful, disgusting, plain stupid
1. Ewwww look at that Matt kid, his hair is so crusty.

2. That girl Becky has some crusty ass toenails.

3. Ew that boy Bobby is so crusty he tried to touch me in class.

4. That kid Kimani's notes were so crusty I could barely read them.
by DanaBana October 20, 2010
a female that you would never want to have sex with or have any type of sexual interactions with... The type of girl that its not even okay to hook up when you are wasted.
Ewww, that bitch is so crusty.
by mr.mjcyee September 12, 2010
a word used to describe someone who is extremely bitchy. usually after not getting pussy at a party or after having a series of bad events that comes their way. a person who does not like the word crusty is usually someone that the word crusty defines to the point of perfection. In order to rid of crust, one must do one of the following. Drink beer. Get a nut. Eat an Uncrustable. Or pack a monstrous lip. No one likes to be crusty, and many try to hide their crustiness by throwing extremely large lips. "The Salty Spitoon" is someone who does not get any pussy at a party and in order to hide their crustiness, they throw a big lip.

Not all crusts mix. Your crust can clash with another's causing you to hate that person and want to fight them.
"You're so fucking crusty right now." "This kid is the Crust-Ness Monster", "Fuck dude...Im so crusty"
"if we ate a whole pizza and left the crust in the box...thats what ud be right now"
"I hate the word crusty---thats because your crusty"
by crustness monster May 17, 2010
Thick-skinned: deliberately blunt and frank to the point of rudeness, while indifferent to others' reactions.
That man was crusty enough to walk into the house without even knocking at the door.
by Alogon April 29, 2009
Something that is used and dried up but is still beautiful on the outside.
Justina Moccia is also known as Crusty
by Tyler&Robin February 25, 2009
A group of girls, or an individual who acts like they are "all that". 99.9999% of the time, no one likes this group or this individual.
Also this group or individual tends to be greasy and dressed like a whore.
"Crusty, CRusty, CRUSTY"
"She's such a crusty with her lemur face"
by jparker30 December 12, 2008
an adjective to negatively describe something in place of a swear like dumb ass or something along those lines
Damn jimmy your so crusty.
Wow i swear frankie is the definition of crust.
by JonDaDon July 15, 2010

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