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1 definition by THE_NEO

The act of doing uncommon sometimes nasty acts that may or may not be justified.
"That party last night got real rasty!" "Kyle got real rasty last night when he drank that chew spit for $100." "Andrew's new name is now 'King Rast' because of all the rasty shit he does."
by THE_NEO January 29, 2012
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