look up any word, like ratchet:
 
1.
The sorority girl's term for being lazy while wearing sweats.
I'm crusting on the couch today.
by whitleann45 January 08, 2011
 
2.
Any unwanted leavings of any kind.
Are you going to eat your pizza crustings, buddy?
by Ghostington February 16, 2014
 
3.
When a girl grinds her crack on your leg, and dried dookie gets on your leg.
Sam and his girl were crusting hardcore last night.
by BigNate55 May 14, 2010
 
4.
when you drink so much you get a alchohol crust around your mouth
wow man i must have been hammered last night, i woke up with a crusting
by trunkface January 04, 2006