Top Definition
An extremely weird religion that seems to revolve around Friday 13th
Person 1: happy Friday 13th!!

Person 2: whut

Person 1: I'm a Lunist, baby!!

Person 2: whut

Person 1: gawd, get with the times, Lunism is the new religion of this day and age!!
by Annonymous is Taken D= March 07, 2009
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