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1 definition by Alien From a Distant Planet

 
1.
A term used to describe something amazing or awesome; used as a substitute for the surfer dude slang sick, or the hood slang ill.
Substitue for ill-

Gangsta: Yo, dat shit is diseased!

Substitute for sick-

Surfer Dude: Hey man, that was wicked diseased!
by Alien From a Distant Planet November 21, 2007