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a term used to describe a serious, (yet amazing and totally radical) grave faced situation in which something beyond all things holy has happend.
"oh my god becky, those prada shoes you got last week were only 30 dollars?! thats like sicky sicky gnar gnar!"

"dude. you just freakin' landed an ollie impossible? you are beyond jesus. you... are... sicky sicky gnar gnar brah! yeahyeah!
by ifreakingloveyou August 09, 2010
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2
an adjitive to describe something totally awsome or even unbelievable
when dean did that front side rodeo off that kicker is was so sicky sicky gnar gnar!
by dr blam December 14, 2008
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