"A Sad Discovery:" House art-wank
So, okay, I feel vaguely anxious about making a post linking to now-deleted posts, but hopefully it's funny enough to make up for it? If not, you know, mock at will.

A group of House/Wilson-y writers and artists come to the conclusion that a fairly popular fanartist, elicia8, has been using Photoshop or photo references in her drawings. Naturally, the way they go about bringing this up is creating a separate Evidence Journal (and, I am not making this up, titling it "The No-Spin Zone") and posting at length about how sad they are to have to bring this up. (The evidence posts were later locked, but can be found c & p'ed here, here, here, and here. A sample: "Several weeks ago, it was brought to my attention, by brynnamorgan, that she had discovered a problem--a serious problem--with this popular artwork. As I had always had an unsettled feeling about these pieces--something always felt a bit too perfect--I began to assist this artist in her investigation. What we found has dismayed all of us."

They then post a super-serious announcement post to house_wilson. The most common reaction is a resounding "Who cares?" (Comment screencaps are here, here, and here. The second set of comments capped is probably the funniest.)

The OP then deletes their announcement post, friends-lock or delete the evidence post, and retreat with a new flounce post: "All right then. We'll never bring it up again." (No screencaps available, afaik.) People respond to this with a lot of "...wtf is the point of this, then?," so this post is also deleted.

This mostly just leaves the fanartist's response post (quote: "ETA: My mommy helped with the hard parts.") and a whole lot of posts mocking the whole thing. And the evidence journal's proof gallery.

No comment from any of the OP contributors so far, though, so there's still potential fun to be had.