1 definition by .genericpseudonym.

Someone who is rarely seen without his hat, perhaps due to the mass of black fuzz that he calls hair that hides underneath it.
Hatdans also resemble creatures from LOTRs.
Dude, that guy is always wearing that scummy hat, he's such a Hatdan.
by .genericpseudonym. November 25, 2009
Get the Hatdan mug.