Adjective used to decribe old people,a gross unidentified substance, anything broken, dirty, crumby, badly made/conceived, falling apart, stupid, wierd, gross, this word can be used very freely as it goes with anything that may have to do with the word crust but it never describes anything good.
1: that old man keeps staring at me
2: eww look how crusty he is

-or-

1: i just got this from the dollar store and the lid wont close on it
2: here let me try... damn its not working it sooo crusty
1:that whole dollar store is crusty

-or-

1:Mr Tawil thinks he can teach us history by giving us a whole bunch of crosswords, he is such a crust.
2:Yea, he smell like weed, cigarettes and bagels, he is such a crusty old man.

-or-
1:ew look at the crust under this desk
2: that's gum , you dumbass
by Naomiiiiii January 16, 2007
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
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 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
a weird/creepy person, or someone who is a bit 'crusty'.
that man is really crusty
by bottisham people October 23, 2012
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
Semi abusive discription of a traveler, Or a Wannnabe. Part of the New Agers, with their own music, Dress Sense, Lifestyle. opted out of mainstream society in the mid to late 80's traveling from place to place with the unforgetable dog-on-a-string acssory.
frist seen in the media in the 1985 battle of the beanfield. (UK)dispised by most of society including (and not to be confused with) Gypsies, Pykies, showmen, and tramps.
The 1994 Criminal Justice and Public Order Act included legislation against their lifstyle.
The remaining one's get hounded by teenages, on the lookout for somene who might be able to spare/sell them Dope
The common Cry of: "Get That Fucking Dog Out of Here and Go With It You Crusty Get!" in between Glastonbery and Bristol Before the Summer Solstace.
by Marcus Gravy March 26, 2007
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