What began as Jimmy Kimmel’s playful monologue with his brother pretending to be Governor Gavin Newsom erupted into late-night chaos when Seth Meyers stormed the stage, turning a simple joke into a viral, laugh-out-loud showdown that fans now call one of Kimmel’s funniest moments ever.

What started as a routine comedy bit on Jimmy Kimmel Live! quickly turned into one of the wildest, most unexpected moments in late-night TV this year — and fans are still talking about it.

On Tuesday night’s show in Los Angeles, Kimmel was in the middle of his signature monologue when things took a hilariously chaotic turn involving his brother, California’s Governor Gavin Newsom (or rather, Kimmel’s brother pretending to be him), and an uninvited guest: fellow late-night host Seth Meyers.

The sketch began innocently enough.

Kimmel, who recently returned from a short hiatus, opened his show by poking fun at California politics.

To make things even funnier, his brother, Jonathan Kimmel, came out dressed as Governor Newsom, complete with a fake tan, a slicked-back wig, and a stack of “executive orders” that looked suspiciously like In-N-Out receipts.

“We’re banning bad jokes and raising taxes on dad humor,” Jonathan joked as the audience roared.

But before Kimmel could continue, chaos erupted.

From backstage, a familiar voice shouted, “Hey, that’s my joke, you little creep!” Out stormed Late Night host Seth Meyers, wearing his signature smirk and a navy suit, pretending to be furious.

The audience gasped, then erupted into applause as Meyers charged onto the stage, grabbing Kimmel’s microphone and pretending to “hijack” the show.

“Ladies and gentlemen,” Meyers declared, “welcome to Late Night with Seth Meyers, the only show brave enough to crash other people’s monologues!” Kimmel, struggling not to laugh, shot back, “Oh great, it’s that little creep from New York again — what, did you lose your time slot?” The crowd went wild as the two traded mock insults, clearly enjoying every second of their improvised roast battle.

Jonathan Kimmel, still in full Gavin Newsom costume, awkwardly stood between them, unsure whether to stay in character or break.

“Um, Governor Newsom calls for a ceasefire,” he muttered, waving his fake papers as the audience howled.

Meyers pointed at him and said, “Who even invited this guy? Is this what California looks like now?” That line drew one of the biggest laughs of the night.

Eventually, a stage manager — later revealed to be another Kimmel Live! staffer playing along — ran out and “dragged” Meyers offstage in mock protest as the crowd chanted “Let him stay!” The moment ended with Kimmel shaking his head, laughing, and saying, “You never know who’s going to show up when your security budget goes to prop comedy.”

After the show, clips of the moment flooded social media.

Fans flooded X (formerly Twitter) and Instagram with reactions, calling it “the best late-night crossover in years” and “proof that real comedy still exists.

” One viewer wrote, “It’s giving old-school SNL energy — chaotic, unscripted, and hilarious.

” Another joked, “I want Seth Meyers to crash every Kimmel episode now.”

The bit was reportedly planned as a friendly surprise between the two hosts, who share a long history in late-night TV rivalry.

Both have often joked about being “the least dangerous” men in television, poking fun at their reputation for being the “nice guys” of the late-night circuit.

But behind the jokes, the moment marked a rare crossover — two network hosts from competing shows sharing one stage, something that almost never happens in today’s competitive talk-show landscape.

In a backstage interview later that night, Kimmel laughed about the whole thing, saying, “I didn’t know he’d actually come out and tackle my show like that — but honestly, it was worth it.

Seth’s a menace, but he’s a funny menace.

” Meyers responded on his own show the next day, joking, “I just wanted to remind Jimmy that monologues are a shared cultural resource.

Also, his brother makes a surprisingly good governor.”

The segment has since gone viral, amassing millions of views within hours, with fans calling for an official Kimmel-Meyers crossover special.

“This is the chaos we needed,” one user commented.

“No politics, no scripts, just pure comedy gold.”

For Kimmel, who’s known for turning real-life unpredictability into late-night magic, this unexpected “invasion” may go down as one of his show’s most iconic moments.

As he closed that night’s episode, still chuckling, he quipped, “If you can’t beat Seth Meyers, just let him crash the show — it’s cheaper than booking a guest.”

The crowd erupted one final time — proving that sometimes, the funniest things on live TV are the ones nobody plans.