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1 definition by kobykris

 
1.
(noun)peice of shit diamond star motorsports. DSM's are notorious for breaking down every tuesday, or whenever you start them.
"I was fired from my new job because my POSDSM broke down again."

"My g/f got gangbanged by five black guys because my POSDSM steals all my monies."
by kobykris October 17, 2007