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1.
Short for hilarious, you say it when you think something is really funny. Can also be used sarcastically.
That was totally larius!
by Wannabeacracker June 13, 2010
 
2.
Larius is a shortened term for hilarious, when referring to the shape of a penis. Mainly ones of odd sizes, colors, or anything unusual about that of a penis.
Gosh Johnny, you should get your dick checked out... that shit is just larius!
by tttim November 12, 2007