During the 15 unpredictable minutes of back-and-forth, Letterman asked the eccentric artist if it was true that she once ate a Barbie doll's head on stage, to which the singer insisted that she did it "all the time" and proceeded to grab Letterman's production notes, crumpling up the script and stuffing it in her mouth. She chewed on the paper in front of the concerned host before spitting it out behind her chair.
Gaga talked to the talk-show host about more of her outrageous stage antics and crazy persona, including the infamous egg in which she was carried into the 2011 Grammy Awards. Gaga explained, "It's a place where I can meditate and experience rebirth. So I just get inside of it and close it and then when I feel that I have been reborn spiritually."
Letterman further pointed out Gaga's other-worldliness stating, "I have never thought to myself, I'm just going to wear my underpants." Gaga shot back, "Why not? I'm sure you'd look nice if you just took your pants off."
Watch Lady Gaga on 'The Late Show With David Letterman.'