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1.
(adj) A term used to describe something that is displeasing to the senses.
Jack stuffed a dozen oysters up his Granny's cunt and sucked out 13... how CRUSTACIOUS!
by ALTOIDZboi April 02, 2004
 
2.
The quality or state of being crusty.
Guy 1: bro why don't you go out with Bertha?

Guy 2: Hell no bro she's so crustacious!

Guy 1: haha yea
by Punkrocker420 September 28, 2014