I don’t care who stunt-tastes it, the Double Down is the Special Needs Mom of fud: You’re horrified, but you can’t help looking/yammering. Luckily, it will eventually disappear like every other over-the-top gross-out concoction from the McKFC-type labs that’s designed for buzz alone. While the fame junkie will still be shrieking incoherently after the last Twinkie has gone moldy.