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Yngvi (has evolved into "yngz" in some states) is

a. Being a party animal and embarrassing yourself on the dancefloor.
b. (philosophy) The fundamental belief system that there is no reason that tomorrow will ever come and therefor partying accordingly.
Wow, Tom really was a total yngvi yesterday.

What's up with Jordan? He's been acting all yngz tonight!
by totally_omfg February 03, 2010
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