1 definition by Hardcore Unit
MDA stands for Muff Divers Association. They were a group of bad-ass fuckers from Upstate New York in the 1980"s. Also known as the "MDA Hardcore Unit" . Leader was Rudy, a legendary mutha who would host epic parties. The membership were all best friends who would party hard, but always had each other's back. RIP Rudy! No Muff Too Tough, We Dive At Five!
by Hardcore Unit June 12, 2014