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The residue/resin left on a crack can or crack pipe.
Hey! Scrape that crack butter outta that can and we'll smoke it too!
by x-crack smoka January 09, 2006
The smelly sweat mixed with shit found in the crack of an ass.
After working all day, Jim noticed the smell of crack butter coming from his pants.
by David Faircloth June 21, 2005