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Something that is super extra awesome. This awesomeness even goes beyond gnarly. Both silly and sick are adjectives in this phrase, so you know it means buisness.
Davone: that tre flip you did was silly sick!
Charlie: I know man, i've been trying for weeks.
by Elib November 10, 2006
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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