Theo Wargo / Getty Images North America 1 / 7
Theo Wargo / Getty Images North America 1 / 7

Justin Timberlake has a way with words, and that isn't always a great thing.

While appearing on "The Late Late Show," singer and actress Mandy Moore recalled her first encounter with the "Can't Stop The Feeling" singer while she toured with N'SYNC, JT's former group, back in the day. The encounter left her "scarred," she said.

"I'm a terrible dancer, but I had background dancers at the time because that's what you did, and I remember distinctly one time walking backstage, and I didn't really see much of the guys because I was the measly opening act. Nobody cared about me," she told the show's host James Corden, adding that she had a huge crush on JT at the time.

"But Justin Timberlake was there and somehow there was a conversation about feet or foot size. They were comparing shoe [size]. And all the background dancers and the 'NSync background dancers and my background dancers [were there], and I stroll up at 15, like, freaking out that Justin Timberlake is there."

As she got giddy with excitement to be in Justin's mere presence, the then-boy bander spoke to her.

"He was like, 'You have big feet for a girl,'" she recalled him saying. "I'm sure he doesn't remember this at all but I was so impressionable, and I thought the world of him and he was on a pedestal. I mean, 16 years later it stuck with me, so it really scarred me emotionally."

To be fair, Mandy is hardly a diminutive star at 5 foot 10 inches tall, so it's expected she would have a larger shoe size.

"I [was] going through puberty at the time," she said. "Yeah, it was embarrassing."

After years of her own success, she's obviously gotten over the open-mouth-insert-foot comment, but she hasn't forgotten it. Still, Justin's words were hardly the most difficult thing about those early superstar days.

"Dancing [was the hardest part]," she said. "I have no rhythm. I'm super awkward. I think the powers that be realized very early on, You know what, you should just have background dancers."