When someone or something is not cool, bad, or a substitute for any insult saying someone is lame. Can be multiplied or presented bigger by saying things like; Ultra Dook, Mega Dook, Dook x infinity. It is also as an adjective.
A hook upon which crispy, shiny de-feathered ducks are hung upon. There is usually an assortment of tapesty things underneath the dooks.
Proud Chef placed the last de-feathered beast upon his shiny dook. The ultra clear glass of the duckdow reflected the luminous orange glow of the crispy ducks that only yesterday were swimming in a pond.