Lady Gaga's Mother Tells Oprah Winfrey She "Thought She Had a Screw Loose"

In an exclusive interview, Oprah Winfrey visits Lady Gaga's childhood home in New York and sits down with her mother, Cynthia Germanotta, who shares what it is like to be the mother of the world's biggest pop star.

OK! GALLERY: THE WORLD REVOLVES AROUND LADY GAGA

"How was that for you when she was in her teens," Oprah asks in a sneak peek look at Sunday's interview on OWN.

"When Gaga started emerging, when she was performing, I think it was at Joe's Pub downtown. She was in her bikini performing with Lady Starlight and decided that night to heavy metal to actually light hairspray on fire," Cynthia recalls. "Some people left when that happened and a lot of people stayed and thought it was cool, but her father and I were like, honestly, he said, 'I think she has a screw loose.' "

OK! NEWS: LADY GAGA REACHES TWITTER MILESTONE OF 20 MILLIONS FOLLOWERS

Lady Gaga also reveals that this exclusive interview with Oprah will be her last — for awhile.

"Other than this interview, Oprah, I do not intend to speak to anyone for a very long time," she says.

Gaga's interview airs on Sunday, March 18 at 9 p.m. ET on OWN.

Watch the interview clip, below.