Folks, time to pack your shit up and leave, because the Joke Boat has officially set sail for cleaner waters. The long-running and increasingly tired "arrow in the knee" meme has been embraced by Bethesda, and given legitimacy in the form of an Xbox Live Avatar prop.
"Can your avatar dodge the horrible fate of many a guard in Skyrim? Find out with the Skyrim Arrow in the Knee prop," boasts the Marketplace listing.
The prop costs 240 Microsoft Points and does exactly what is promised -- it sticks in your Avatar's knee while everybody you show it to secretly wishes you would just piss off and die. Definitely worth paying for, if you enjoy buying humor that got old two weeks after Skyrim launched.
This post makes me sound a lot more bitter and resentful about this than I actually am. Oh well.
[Thanks everyone who sent this in!]