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2.
Can be used as verb or adjective, when describing something it is the equivalent of amazing or wicked. When used as an adjective, it means to be having a good time or being laid back and relaxing.
"Last nite was so crusp i nearly wet myself!!!"

- hey, what you up to?
- Oh nufin much, jst cruspin to the max.
by 4HP7 April 25, 2006
 
1.
Can be used as an adjective noun or verb with positive connotations. An amount of poetic leicense is attatched to the word, the user of "crusp" is able to judge when is an appropriate time for usage.
crusp up, cruspin to the max, crusp so hard it hurts
by Donitello May 22, 2006