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Noun. A spontanous expedition in which participants wander in search of new places, usually to eat. Dimrods typically occur at night, hence dim.

One can usually find themselves "Firin up a dimrod" after work or in cases of extreme boredom or curiousity.
Caller 1: Hey, wanna fire up a dimrod?
Caller 2: Hell ya
Caller 1 & 2: Firin up a dimrod!
by nguyeny-pants December 01, 2009