If you and your significant other have one of those "hall pass" agreements, where each of you gets to nail one celebrity in the unlikely event that the opportunity should arise, here's some advice for you:

Don't choose a celebrity with herpes. How will you know? Well, the website Ranker.com put together a list of 52 celebrities who are supposedly carrying it around. Here are some of them:

Paris Hilton.Her Valtrex prescription was once found in a storage locker she abandoned.

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Britney Spears.She was spotted buying a different herpes medication called Zovirax at a drug store.

(Photo by Ethan Miller/Getty Images for ABC)
(Photo by Ethan Miller/Getty Images for ABC)
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Kim Kardashian. She supposedly shows signs of herpes from time to time on her lip. Also, her ex-husband Kris Humphries was sued for allegedly infecting a woman.

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Rihanna and Chris Brown. They've also been spotted with lip scars.

(Photo by Christopher Polk/Getty Images for NARAS)
(Photo by Christopher Polk/Getty Images for NARAS)
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Brad Pitt.He reportedly got it BEFORE hooking up with Jennifer Aniston . . . although it's not clear if SHE has it.

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David and Victoria Beckham.No word if one of them gave it to the other, or if they both brought it into the relationship.

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Bill Clinton.There's no word where he got it, or if he passed it along to Hillary.

(Photo by Daniel Berehulak/Getty Images)
(Photo by Daniel Berehulak/Getty Images)
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Robin Williams.He was once sued by a woman who claimed she got it from him. They settled out of court.

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(Getty Images)
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Michael Vick.He was also sued for giving it to a woman.

(Photo by Rich Schultz /Getty Images)
(Photo by Rich Schultz /Getty Images)
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Tony Bennett. When a woman sued him for infecting her, he countersued for defamation. What a world.

Janet Jackson. Her former personal chef claimed she used to get her prescription in his name.

Joshua Jackson. It's suspected that he gave it to his former "Dawson's Creek" co-star Katie Holmes.

Former Whitesnake video vixen Tawny Kitaen reportedly carries FOUR DIFFERENT STRAINS of herpes.

And then there's good old Derek Jeter... who's basically PATIENT ZERO for celebrity herpes among Hollywood's younger royalty.

Jeter reportedly passed it along to Jessica Alba, Mariah Carey, Alyssa Milano, Jessica Biel, Scarlett Johansson and Vanessa Minnillo.

Meanwhile, Justin Timberlake and Orlando Bloom may have been indirectly infected by Jeter. Justin is, of course, married to Jessica Biel . . . while Orlando reportedly caught it from Minnillo . . . who also passed it on to her current husband, Nick Lachey.

Of course, if we were to extrapolate from Alba, Mariah, Alyssa and Scarlett, there are plenty of other famous guys who could have also caught the herp from Jeter's peter.

Did your celebrity crush make the list?

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