Name the flavor. Probably win something.

While traversing the aisles of my local Giant Eagle, I spied this black Doritos bag with the mysterious X-13D on it. Sensing a dubious marketing ploy, I bought a bag. Well, actually, my wife bought the bag for her friend at work, so I have no idea what the mystery flavor that you are invited to name is. But there's obviously an online component here. So go forth and cognominate! And win (something ... I didn't check out exactly what, but you can do that on the website, I'm sure.)