How much would you pay for chewing gum that’s been HERE?

Washington: After her hair, the can of half drunk soda, and her cigarette lighter, the gum that Britney Spears chewed when she went to visit estranged hubby Kevin Federline after hopping out of rehab is going up for auction on internet site eBay.

The seller claims that the gum is the real deal, and that it was collected after Britney spat it out during a confrontation with the paparazzi.

Also found on the site was a gum wrapper, and though the seller isn’t too sure that that too was once in Britney’s possession, he still putting it up for auction under the possibility that it just might be.

“Myself and a few onlookers gathered downstairs and watched the photographers mob her. At one point Britney got mad and yelled at them and a bit later she spat out her gum on the nearby grass,” Contactmusic quoted the seller, as saying. “I gathered it shortly after and took it home where I put it straight into my Ziplock (plastic) bag. Also nearby I found a gum wrapper, but I do not want to speculate if that is hers. Nonetheless, I will include that too, because it could be,” the seller added.

The gum was first listed on the site on February 26 and is going for $350.

The seller claims to have retrieved the gum when Spears went to visit K-Fed in Tarzana, California on February 21.