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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
 
1.
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