Julia Louis Dreyfus Baring Her Booty

On the pleasant surprise front, Julia Louis Dreyfus is baring almost all for the Constitution and HBO show promotion.

Veep star Julia Louis-Dreyfus, 53, is naked on the cover of Rolling Stone, wearing nothing but the U.S. Constitution inked on her back.

"In my defense, 'I was in a drunken stupor,' " the actress tweeted as she unveiled the cheeky photo.

Someone must have been: Prominently above her derriere is the famously grand signature of founding father John Hancock.

Only problem: He didn't sign the Constitution; he signed the Declaration of Independence, as numerous online jeers, from Politico to the New York Daily News, pointed out.

Oops. Oh, well, it may have been deliberate: Louis-Dreyfus' plays the Veep as kind of hapless anyway.

Louis-Dreyfus joke tweeted Wednesday that it was all Mike McClintock's fault. He's the Veep character played by Matt Walsh who is the Veep's communications director. "Yet another Mike (screw-up)," she snarked. "Dummy."

Rolling Stone's explanation was just as implausible: Spokeswoman Melissa Bruno said the Declaration of the Independence is on the other side of Louis-Dreyfus' body, but they couldn't fit in the signatures, reported the Associated Press.

(In their defense, can YOU name the 40 people who signed the Constitution? Hint: George Washington is number one.)

Louis-Dreyfus was on the magazine because her' hit HBO series kicked off its third season on Sunday, and she talks to RS about her success in showbiz, from Seinfeld to The New Adventures of Old Christine to Veep. And that's only some of her TV work.

Louis-Dreyfus says that while sexism is alive and well in Hollywood, she fights it.

"There is sexism – I'm not denying its existence," she says. "But I'm saying that I will deny its effort against me. I just pay it no nevermind and say, 'Get out of my way.' "

And as part of her current gig, she recently had dinner with real veep Joe Biden.

"He loves to tell stories, and I'm a good listener," she said. "I loved that dinner. There was no cynicism, just a very earnest jubilation about being there."