This word can basically mean any adjective, but in most cases, it will either mean gross, old, and/or ugly (see grody). It can also mean, however, cool or tight.
"Eww I need a new comfortor, mine's all crusty-like."

"Dude, I love Mickey, that kid's so crusty."
by Alison May 15, 2005
Get the crusty mug.
Originally meant to mean a nasty ass person who doesn't shower or brush their teeth although it's evolved to mean anybody who's just utterly horrifying and repulsive
"Look at Anthony over there, wearing 3 year old Jordans and a sweaty ass Fubu jacket. That nigga is so crusty"
by PJsmallz November 4, 2013
Get the crusty mug.
One who resides in the state of Pennsylvania and smokes a lot of marijuana.

it can also be used as a verb "getting crusty"
Hey man, wanna get crusty today?

Hell yeah, you got your bong?
by i bet youre a whore January 29, 2009
Get the crusty mug.
A dumbass Nigga who is crusty musty sad and will die a virgin that thinks there cool because they know how to talk shit but then will never finish what they started. Usually thinks there the shit but they know when there alone they beat there meat dry to gay,midget and girl with dicks porn every night. Then they try to tell there self one day I will lose my virginity to a hoe with ten types of AIDS and still be proud they lost it
Get yo burn crusty depressed ass the fuck out of here nigga
by Long Beach crips gang January 4, 2018
Get the crusty mug.
being really, really, extremely bad at something (specifically FIFA world cup)
Im gonna beat your crusty self at FIFA this weekend
by catmeow76 November 19, 2010
Get the crusty mug.
Something that requires a lot of maturity, formality, responsibility, no fun - something that is very adult and boring for people that are not mature enough to accept it.
Paying bills and taxes are crusty things to do
by orbitron2015 August 3, 2015
Get the crusty mug.