A term for a particular type of ganster. (the name is derived from "Rupert" and conbined with the well known ganster rapper "Snoop Doggy Dogg). Do not mess with this man he will either put a cap in your ass do a drive by on you with his Landizzle
Roopdog is a big old ganster livin it up
by Poostabber November 28, 2003
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