Top Definition
A bro who is obsessed with summer bonfires, smores, and the like. Similar to a pyro
Derived from the god promethius, who supposedly introduced fire to human beings on earth
John: Hey is Nick having another bonfire at his place tonight?
Frank: Yeah, thats like the 5th one this month.
John: What a bromethius
by ltdjkl August 12, 2011
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