Well, if you don't get the joke, then join this group. You'll get it as soon as your membership is accepted (or not).

NOTE: This mod is unbalanced, and just for fun. Do not take it seriously. It is not lore-friendly, and requires Dragonborn.

To get the hammer, open up your console and type player.additem XX0036C9 (the ID may vary depending on your load order). Alternatively, you can type help nocte on your console and get the hammer's ID.