look up any word, like blumpkin:
Non-fatal drug overdose. Burned out.
"Can't make the queer club tonight Casanova, came off this weekend's rave with wicked manaburn."

Popular usage probably from "Magic: The Gathering" card game rules. "Mana" Originally a tribal shaman's term for magical essence.
by Oracle Arion December 25, 2008
from 5 to 15 Black Mages *and 1 bard pr 5 black mages, add them to a a alliance to destroy every creature in Final fantasy XI Online
Manaburn example>

BLM1 starts casting thundaga III
BLM2 starts casting Thundaga III
BLM3 Starts casting firaga III

etc etc
by Iniin August 15, 2006