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Old men with un reasonabley huge heads, like the ones where their head is bigger then their torso.
Old man: "Nuhhhh"
Guy1: "Oh my god look at the size of that guys head!"
Guy2: "HES A GROPPAR HAHA!"
by Groppar slayer March 10, 2011
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2
A old man, mostly in his 70's, who broke out of the retirement home and is now running down your street naked with his 5 inch old wrinkly dick flopping everywhere.
Guy 1: That old guy just broke out of the old peoples home..

Guy 2: GET THAT MOTHA FUCKIN GROPPAR!
by Debby Fanhailsenburger March 19, 2011
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