Jennifer Lopez and Casper Smart Reenact Cougar Scene From 'Wedding Crashers'

J.Lo and her beau make light of their 18-year age difference.

Jennifer Lopez and Casper Smart made light of their 18-year age difference by performing one of the funnier scenes from the 2005 comedy Wedding Crashers.

A makeup-free J.Lo and the 28-year-old choreographer Dubsmashed the part in the movie where Owen Wilson's character, John Beckwith, is seduced by the mother-of-the-bride, played by Jane Seymour.

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"Call me Cat," Lopez lip synced. "Call me Kitty Cat."

The Dubsmash fun didn't stop there. The 46-year-old American Idol judge also shared a selfie video over Labor Day weekend where she mouthed, "She's so rude. I hate her. She's so ugly. But she's my best friend."

Can we expect such shenanigans during Lopez's Las Vegas residency come January?

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The triple-threat entertainer shared with ET what her fans can expect from her Sin City shows.

"It's gonna have everything that I've been known to do over the years, and it's gonna be a beautiful, glamorous kind of Vegas show," she said. "Something that I think people, whether you're a fan of my music or not, would come and see and really enjoy. That's my goal."