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2.
Someone that one would consider a "homey", or friend.
My bro Adrian is a real markassbuster
by Blade2567 April 19, 2007
 
1.
An individual who is always "borrowing" and gets crap from his friends. Also selling possesions just to eat dinner or play putt-putt.
Man you are one Mark Ass Buster always seeling your old shoes for money to eat on. (E. M. B.)
by Erik Customs September 07, 2006