This caused quite a stir at our Super Bowl party, and I guess it made news too, with Timberlake claiming it was "unintentional." When I saw the photo above on Yahoo! News, it confirmed my suspicions that it wasn't an accident at all; because Janet had put a pasty over her nipple in anticipation of the halftime "show."
But then I got to wondering: What the hell was that on her nipple?
It seemed to be metal. And sharp. Could it possibly be a ninja throwing star?
I consulted a ninja manual on such weapons and found a page about nipple stars, more commonly known throughout the ninja industry as nipple shurikens or nipplekins.
They come in many shapes and sizes, with a hole in the middle for easy nipple storage.
Once on the nipples, they can be easily concealed under a black shirt or leather bra until the ninja is ready to use them to dispatch an enemy. I could've only hoped that Janet had planned to use them to take out P. Diddy before Justin unwittingly foiled her plot.
Update: Thanks to an even closer shot of Janet's nipple, now I'm 100% convinced it was a ninja nipple weapon. Just check out the comments to this post and scroll down to lexxy_pie's reply.