Matt Damon Continues His Feud with Jimmy Kimmel After Making His Debut as ‘Manny’ to George Clooney’s Twins

Not even holding caring of George Clooney’s newborn twins could keep Matt Damon from doubling down on his longtime feud with Jimmy Kimmel.

Damon debuted as George and Amal’s “manny” to 4-month-old twins Ella and Alexander on Jimmy Kimmel Live  Monday night – though fast devolved into slinging insults (and eventually even throwing adult center fingers) during a late night host.

“He’s my manny,” Clooney told a assembly of his longtime crony and Ocean’s Eleven costar as Damon rolled in pulling a double hiker and carrying a diaper bag on one shoulder and spit-up towel on a other. “He’s only really good with a kids!”

Of course, a bit was a setup for Kimmel from prankmaster Clooney, there to taunt Kimmel with his No. 1 rival.

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Matt Damon

RELATED: Matt Damon vs. Jimmy Kimmel! The Definitive History of Their Epic Twelve-Year Feud

“I’m his manny. It’s a nanny who’s a man,” Damon, 47, explained — his knowledge as a father to 4 daughters surely entrance in handy.

“I indeed only wanted to get their snooze so we brought them to a place where they wouldn’t be woken adult by laughter,” Damon shot back.

The waggish behind and onward continued before Clooney asked Damon to uncover Kimmel and his assembly a kids. That’s when Damon delivered a ultimate mic drop, lifting a feign Ella and Alexander out of their strollers and flipping Kimmel his dual center fingers.

“There they are right there,” Damon said. “This is screw, and this is you. Screw you!”

RELATED: Matt Damon on His Lasting Friendship with George Clooney: ‘He’s Got a Huge Heart’

Matt Damon, George Clooney and Jimmy Kimmel

Matt Damon

WATCH: George Clooney Talks Twins during Suburbicon Premiere with Wife Amal

While Damon competence not make a best manny to Clooney’s kids, he is starring in Clooney’s new movie Suburbicon — that the ER alum directed, co-produced and co-wrote alongside his longtime collaborators, a Coen brothers.

And Damon still gets copiousness of one-on-one time with Clooney’s kids, who have grown utterly incompatible dispositions.

“They start out with a celebrity right off a bat,” Clooney told Entertainment Tonight on Sept. 1. “[Alexander] is a bully already. [Matt] saw him. He’s a moose! Literally, he only sits and he eats.”

“He looks like he could rebound right now, some place in Hollywood,” Damon chimed in.

“Like, checking IDs on a approach into a nursery,” Clooney continued.

In contrariety to Alexander, Clooney pronounced Ella is “very superb and all eyes.”

“She looks like Amal, appreciate God,” he joked.