A sexual position wherein the man is behind the woman and both are completley horizontal. Similar to normal doggystyle but both partners are laying flat, hence "down" in DSD meaning "doggystyle down". Once doggystyle has become doggystyle down the man grabs both of the womans wrists with his left hand and as much hair as possible with his right hand. Just achieving the position does not constitute true aggressive DSD. Extreme neck cranking, wrist bending and ass pounding must be performed.
Yesterday my mom and dad were fighting because she bounced a check. My dad got so pissed he made me give my mom some aggressive DSD!!