Comment Type #29
In the context of commenting, a Munchausen comment is when you create long, involved, complex scenarios featuring a variety of different characters, either attacking or defending. This is done to get attention typically, or to attack someone that is particularly disliked. It often involves using Sock Puppet comments to support or assist the commenter.
A hat tip to Tungsten Monk for this one, who describes the phenomenon this way, referring to an odd episode between the bloggers Seixon and Truthout's Jason Leopold:
I've seen sockpuppetry like this before, usually on the fan fiction boards. Over there, we call it "trolling." The kicker? It's the exclusive domain of emotionally insecure fifteen-year-old Goth girls who make up secondary identities and have those identities announce that the fifteen-year-old Goth girl has committed suicide because of all the "OMG MEEEAN!" people who have cruelly victimized her.
A favorite tactic for trolls is, yep, pretending to be somebody else attacking them in order to gain sympathy. Often, they construct elaborate fantasy scenarios, featuring over a dozen different characters- all them- either attacking or defending them. It's the ultimate "Look at me! Look at me!" and if well-done, it can get you a lot of attention. It can also get you kicked off the boards, but that's secondary to the thrill of announcing via a fictional second party that you've just collapsed with a wasting disease and had to be rushed to the hospital. (The complexity of their sagas has given rise to their other popular nickname- MIB, or Munchausen by Internet.)
Such a comment type is somewhat amusing, but ultimately pathetic and sad. Don't do this unless it's clearly intended for comedic effect. This is usually a form of Trolling and is unwelcome almost everywhere. Often it will get you banned, and always it will get you mocked.
*UPDATE: Expanded on the definition