The act of dumping while on: a street, subway, or other public urban area. It is very common to leave the duke there, or to wipe with something odd(such as a leaf or newspaper) then place the wiped object on top.
"So I was just going down the street right, and then i saw this dude doin a massive ghetto dookie right down on the yellow lines man."
by EricJessup May 21, 2008