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1.
a home run, usually a long one; most often (though not exclusively) associated with Marlins outfielder Giancarlo Stanton; a grand slam is referred to as a grand dingy dangy doo
J-Nasty, how are you?

Giancarlito cranked a fourth-inning dingy dangy doo, how the heck are you?
by Parachute Boyz August 14, 2012