dinkydonk Share definition Flag a fine ass that you see in dinkytown near the University of Minnesota, most likely a piece of a sorority girl. Dave O was like she got a dinkydonk. Rob agreed she had a nice ass. dinkydonk by burbni66a April 18, 2010 0 0 Get merch Get the dinkydonk mug. Buy Now — $32.95 See more merch