Lady Gaga has made a career of wearing the most outrageous, impractical and confounding costumes in pop history. But one outfit in particular has continued to top the list of her most cuckoo couture: the Franc Fernandez-designed meat dress she wore to the 2010 MTV VMAs.

The cow costume accessorized with steak shoes and a shank chapeau blew minds at the time and continues to be one of her most iconic looks. But in a new lie detector test with Vanity Fair, Gaga was asked if she would ever wear the raw chuck couture — which was later preserved and turned into beef jerky — again.

“I don’t think so. No,” Gaga, 38, told the examiner, who informed the singer that her answer was “inconclusive.” Gaga seemed taken aback, responding, “Oh, well, that was a surprise.” She was also reminded that she asked Cher to hold her meat purse while accepting the video of the year award for “Bad Romance.”

When the interviewer asked if that moment brought her closer to the fellow pop icon, Gaga said, “I think so. In the moment.”

Dressed in a lacy white outfit with peaked shoulders and a corset top, a serious-looking Gaga seemed nervous to take the test, admitting that she does not “have a good poker face,” which the examiner said caused the machine to detect “some deception.”

“So I do have a good poker face? Thank you,” she replied with a contented smile. In a timely query, Gaga was reminded that the video for her 2009 collab with Beyoncé, “Telephone,” says “to be continued” at the end, prompting a question about whether there will be a second part some day. “Yes,” Gaga said, though she admitted she didn’t know when it would be released, and, when presented with a picture of Beyoncé and asked if her fellow pop icon would be involved the second time, slyly saying “maybe.”

As for whether she’s ever answered the phone and said, “sorry, I can’t hear you, I’m kind of busy,” as she sings in the song, Mother Monster said, “I feel like I might have done that before, but maybe not,” fretting that she was saying both yes and no; the interviewer said either way she was being truthful.

Also, for the record, she still has that giant egg she arrived in at the 2011 Grammy Awards, which is stashed in her 40,000-square foot archive with her other famous costumes.

At press time it wasn’t clear if the second “Telephone” would be including on Gaga’s upcoming seventh studio album, Mayhem, which is slated to drop on March 7. Earlier this week, the singer revealed the full track list for the 14-track LP, which will feature the previously released singles “Die With a Smile,” “Abracadabra” and “Disease,” as well as “Garden of Eden,” “Perfect Celebrity,” “Zombieboy,” “Vanish Into You,” “LoveDrug,” “How Bad Do U Want Me,” “Don’t Call Tonight,” the Gesaffelstein-collab “Killah,” “Shadow of a Man,” “The Beast,” “Blade of Grass” and two bonus tracks, “Kill For Love” and “Can’t Stop the High.”

Watch Gaga take the VF lie detector test below (beef talk begins at 11:30 mark).