It just wouldn't be an Ashton Kutcher party unless everyone got punk'd…or ended up with a potentially life-threatening infection spread through fecal matter. The A-list stars who attended the actor's recent birthday bash may have been exposed to an A-list disease; Hep A, to be exact.

The New York City Department of Health is urging patrons who visited New York's Socialista bar on Feb 7, 8 and 11 to get vaccinated against Hepatitis A, reports Reuters. It turns out the bartender working those evenings was infected, and may have been mixing a little something extra into the mojitos.

Kutcher's girlfriend/minder, Demi Moore, threw her boytoy a 30th birthday bash on Feb. 7. Among the stars on the guest list: Madonna, Bruce Willis, Kate Hudson, Gwyneth Paltrow, Salma Hayek, Javier Bardem, Liv Tyler, Molly Sims, Ali Larter, Eric Dane, Rebecca Gayheart, Lucy Liu, Lake Bell and Ivanka Trump.

Does anyone else think this is just karma's way of getting back at the couple for always rubbing their icky love/Kabbalah worship/horrendous movies in our face?

Let this be a lesson to Moore: in the future, she doesn't have to throw Kutcher a birthday party. Signing over her old-age checks to him is gift enough.

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