A devoted fan and maniac of Dave Mustaine, co-creator, the lead singer, main songwriter, and co-lead and rhythm guitarist of heavy/speed metal band Megadeth.
That Mustainiac moshing in the center is just fucking crazy!
Mustainiacs united to dominated the speed metal fandom!
Look at that Mustainiac licking Dave's hair!
Mustainiacs united to dominated the speed metal fandom!
Look at that Mustainiac licking Dave's hair!
by Larzs September 19, 2009
Get the Mustainiac mug.Word meaning awesome or brilliant. Usually used when Dave pots a ball and screws back 3 lengths of the pool table.
That's mustanical!
by bosco May 14, 2004
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