In the wake of announcing his separation from Courteney Cox, David Arquette told Howard Stern (and the American public) that the two hadn't had sex in four months. Though he since realized he revealed too much, see other stars who don’t seem to know when to shut up!

Dan Steinberg / AP Photo,Dan Steinberg

Dan Steinberg / AP Photo

David Arquette

The 39-year-old actor sounded more like he was digging a hole for his loveless marriage than defending himself against accusations of cheating on his former wife Courteney Cox when he talked to Howard Stern on Tuesday. The celebrity couple decided to split after 11 years of marriage this week, but Arquette shared the nitty-gritty details about their reported four mouths without sex and how his wife had become his mother. "We are not having sex," he told Stern on his Sirius Radio Show. Though TMZ reported that the two talked about what Arquette was going to say prior to his appearance on Stern's show, Arquette apologized for his behavior via Twitter on Wednesday, admitting, "I shared too much."

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Heidi Klum

Supermodel Heidi Klum and singer Seal will likely soon embarrass their four children with their public displays of affection. Seal's new music video "Secret," for example, is a sultry peek into the couple's love life. The two are completely naked rolling around in bed as he sings to his make-up-less (but still gorgeous) wife. That, combined with Heidi's full disclosure of her "spicy" sex life in both magazines and on television are enough to make anyone blush. Despite their growing brood, Klum and Seal make time for " romance," as the Project Runway host told Ellen DeGeneres in 2007. "We just say, 'Hey baby, 2 o'clock in the attic, 6 o'clock in the closet.'"

Henny Ray Abrams / AP Photo

John Mayer

Many were relieved to see that chronic oversharer and singer John Mayer said goodbye to his 3.7 million Twitter followers in September. After all, who would miss his details about his penis falling asleep? Still, we have little doubt quitting the medium will prevent Mayer's TMI messages from getting out. In a January 2010 interview with Rolling Stone, he said that for a relationship to work, his partner had to have "the Joshua Tree of vaginas." And the following month, Mayer told Playboy his penis is a "white supremacist," and described Jessica Simpson as his "sexual napalm." The foul-mouthed singer asked the interviewer, "Did you ever say, 'I want to quit my life and just f------ snort you?"

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Jessica Simpson

Speak of the devil. Jessica Simpson, like her ex boyfriend John Mayer, has a habit of updating the public on her relationships, both past and present. Though we'd expect nothing less from the girl who let a reality TV crew film her marriage to Nick Lachey, Simpson told People magazine in 2008 the mushiest of details about her then-boyfriend were going with Tony Romo. She also tweets PDAs with her current boyfriend Eric Johnson and PSAs about how to fart less.

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Demi Moore and Ashton Kutcher

We get it, Demi Moore: you and husband (or as you call him in every tweet, "hubby") Ashton Kutcher are very much in love. We don't need your Twitter photos to prove it. Kutcher was also eager to quickly post a photo of Moore (or "wifey") bent over in a bikini last March. The couple recently battled rumors of infidelity in their marriage and though we don't wish them any ill will, who would miss the cuddly bed shots and tweeting from across the room?

Chris Pizzello / AP Photo

Jennifer Aniston

Jennifer Aniston is OK with being a role model for jilted lovers, saying in an interview with People magazine, "It's fine. I can take it. If I'm the emblem for 'this is what it looks like to be the lonely girl getting on with her life,' so be it." Though Aniston received much of America's empathy after the romance between her former husband Brad Pitt and current partner Angelina Jolie turned out to be a reality and not just tabloid gossip, the ironic rom-com star has continued to milk that moment. Her high-profile romances since (Bradley Cooper, Gerard Butler, and fellow list-maker John Mayer, to name a reported few) have led to more love life-related complaining, some of which, of course, still pertains to Brangelina. "I felt those details were a little inappropriate to discuss," Aniston told Vogue of an apparent Jolie overshare. "That stuff about how she couldn't wait to get to work every day? That was really uncool." Perhaps it does take one to know one.

Frank Augstein / AP Photo

50 Cent

Rapper 50 Cent made headlines when he tweeted something very vulgar and seemingly homophobic last month about oral sex. But even before that scandalous national attention, the "In Da Club" singer was offering a plethora of his foul thoughts on Twitter—angering GLAAD, PETA, and many fans with his words that are not appropriate for audiences under 18, or really, appropriate at all. But are all of Fitty's F-bombs and womanizing just a Joaquin Phoenix-style hoax? "I look at that platform as another place to express yourself in a different way, to entertain," he told MTV of Twitter. "Not necessarily to create a perception of your actual character, but to be entertaining." 50 Cent may have confused the definitions of "entertaining" and "irritating."

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Megan Fox

Although the media has widely deemed 24-year-old Megan Fox one of the sexiest women in the world, the actress was irritatingly modest to reporters about her appearance in 2009. "I am pretty sure I am a doppelganger for Alan Alda. I'm a tranny. I'm a man. I'm so painfully insecure. I'm on the verge of vomiting now. I am so horrified that I am here, and embarrassed. I'm scared," she said at the Golden Globe Awards. Fox also stuck her foot in her mouth when a reporter asked what her favorite and least favorite things about working with Transformers director Michael Bay were. The stunning star said that her favorite was how "hopelessly awkward" and endearingly "vulnerable and fragile" he is off the set, and her least favorite was how, "He wants to be like Hitler on his sets, and he is." Fortunately for Bay, the comments got Fox booted from the film franchise. Unfortunately for the rest of us, we must await Fox's inevitable next tirade.

Chris Pizzello / AP Photo

Will Smith and Jada Pinkett Smith

Despite ongoing rumors about their sexual orientation, Will Smith and Jada Pinkett Smith have been outspoken about what they claim to be their very active sex life. Pinkett Smith said the two missed the red carpet at the Academy Awards this year due to too much fun in the limo and also told Redbook that the best way to keep things spicy is to do it outside, at friends' houses, and to dress up as a secretary. As for her husband, the former star of The Fresh Prince of Bel-Air confirmed that rolling around in the sheets (or in the grass) is his ideal way to enjoy his time off. Smith told David Letterman that his wife needed to get ready for his vacation in 2008. "She might need to be prepared to have lots of sex," he explained.

Dan Steinberg / AP Photo

Amanda Bynes

Perhaps it's best that 24-year-old actress Amanda Bynes quit Twitter rather than her acting career. The 24-year-old actress spilled her guts on the social media site before she shut down her account in September. Bynes once tweeted about how "chocolate" men make better lovers and sprinkled her other messages with many exclamation marks and emoticons. Though some may miss the absurdity that @chicky (as she was known on Twitter) once brought to the Internet, we'd rather she chirp in a non-public sphere.

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Kim, Khloe, and Kourteney Kardashian

It's like we personally know this E!-made-famous trio. From their reality-TV show, Keeping Up With the Kardashians, it's clear to see that Kim, Khloe and Kourtney are no-holds-barred. In one recent episode, Kourtney made Kim be her "bitch butler" after winning a poker match and in another, Kourtney gave Khloe a bikini wax. And off-screen, we see Kim buck-naked on the cover of this month's W Magazine (which is admittedly an improvement from Playboy three years ago). And if that wasn't enough krazy Kardashian for fans to digest, the three reality-TV stars each have their own Twitter account that connect to their personal websites, sharing everything from family photos to weight issues to live tweets of them watching themselves on TV. If we thought the Kardashian oversharing ended with Kim's infamous sex tape with Ray-J, these sisters have certainly proved us 150 percent wrong.