This is Cockney rhyming slang for head (shortened from crust of bread = head).
Listen to Lazy Sunday Afternoon by The Small Faces and you'll hear the lyrics 'they're doing me crust in' - In other words the neighbours are doing his head in
by notquitepatrick March 9, 2017
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nasty; dirty; smelly; gross; needs to bath
That female over there is straight crust.

by Napa707Nigga November 26, 2006
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1.Of or relating to the mythical vagina crust.
Don't sleep with her she's got mad crust.
by jeffy wallboy August 7, 2008
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Crust; Noun: (Crusty) Most commonly used as a feeling of grodiness, sick, drunk, disgusted and “skeez ball-ish” if you will.
can be used as a expression such as “That bitch is so crusty” which can be good OR bad.
by The Crusty Kr3w April 15, 2010
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Crust cruh-sst - noun, a synonym for a woman's vagina.
"Bruhhh, you shoulda seen that crust I pummeled last night." "Hell yeah Chad"
by The Rusty Hang-glider April 27, 2021
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Usually "a crust". Australian slang referring one's monetary income.
-"So what do you do for a crust?"
-"I'm a Public Servant in Kanbra"
-"That must be bludgy work"
-"What work?"
by Callum S14 April 18, 2010
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Someone who talks a load of crap for an extended period of time and does not know when to shut up!! The action is known as crusting. Frequently overused by some people which in itself is crusting!!
Steven - I saw the other day on this website that if you stand instead of sit during most of your daily activities you burn an extra 37 calories a day....how cool is that??!!

Fred - Dude your crusting, i've never heard anyone as crusty as you in my life....you are the definition of crust!!!
by Mike 'Wheels' Robinson March 31, 2009
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