Britney Spears' used bubble gum is all the rage on eBay. According to reports, there are currently more than two dozen eBay auctions featuring gum that Spears allegedly chewed up and spit out. Many of the postings include a photo of the gum, as well as a story explaining how it was obtained. Prices range from $5 for a tiny piece of Trident to $100 for a wad of Strappleberry-flavored Juicy Fruit. And if you've tried the latter, you know it's worth every freakin' penny.