Just in time for the national day of giving thanks, omnipotent Hollywood tabloids dropped this little gem into our laps: Emma Stone, the down-to-earth actress every guy believes he would actually have a chance with, starred in a sex tape. Allegedly.

“Emma Stone has a sex tape and that’s a fact,” an anonymous source told RadarOnline. Well, there you have it. It’s a fact — a fact that cannot be verified by anyone except Stone and her, um, co-star.

Radar reports that the video was made before Stone’s breakout role in 2007’s “Superbad,” long before she became a household name and her relationship with “Amazing Spider-Man” co-star Andrew Garfield became tabloid fodder.

“The tape remains in the hands of the person she made it with,” the source told Radar, meaning that it hasn’t been shopped around — at least not yet.

If the tape does actually exist and Stone’s star continues to rise, you can bet that the lucky guy will shop it around for six-figures to the sleaziest tabloid or porn company. At least until Stone’s attorneys lay down the law.

So this Thanksgiving, make a wish (or are wishes just for birthdays? New Year’s? Pennies in fountains? — whatever) that the tape exists and that it will eventually see the light of day, if you are into that sort of thing.

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