VIDEO: Ellen DeGeneres scares Matt Lauer on set of her show

(Photo by Slaven Vlasic/Getty Images)
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(Photo by Slaven Vlasic/Getty Images)

Credit: Slaven Vlasic

Credit: Slaven Vlasic

It’s no secret that Ellen DeGeneres and Matt Lauer have been waging a prank war for years.

On her show this week, Ellen one-upped Matt with a hilarious prank that he called "childish."

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Matt chatted with Ellen Thursday about her 20th anniversary since coming out on television, his 20th anniversary since hosting the “Today Show” and their upcoming 60th birthdays.

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7 Things You Didn't Know About Ellen Degeneres

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As they were discussing Lauer and “Today” co-anchor Savannah Guthrie’s contrasting tastes in music, a person popped out of Ellen’s side table and Matt nearly jumped out of his skin.

“It’s so petty,” Lauer said with a laugh. “It’s so childish.”

But Ellen didn’t care.

“That was my favorite so far,” said Ellen.

Watch the prank in the video below.