Kaun Banega Crorepati 18 has once again delivered a hilarious moment, this time involving Bollywood stars Akshay Kumar, Saif Ali Khan and host Amitabh Bachchan. While promoting their upcoming film Haiwaan, the actors found themselves at the center of a playful prank that left Big B startled.

The latest season of KBC has introduced several changes to its format, but moments involving celebrity guests continue to provide plenty of entertainment. During Akshay Kumar's appearance, Amitabh Bachchan became curious about what the actor keeps inside his wallet.

Amitabh Bachchan asks about Akshay's wallet

During the conversation, Amitabh Bachchan mentioned Akshay Kumar's admiration for Charlie Chaplin and jokingly suggested that the actor might carry Chaplin's photograph in his wallet.

Akshay agreed that he was a fan of Chaplin. Big B then asked him to show the wallet to everyone.

That's when Akshay revealed that he had another photograph inside it.

Amitabh Bachchan jokingly asked whether it was his picture. Akshay then got up from his seat, took out his wallet and walked toward Big B.

But what happened next left everyone surprised.

The wallet suddenly catches fire!

As Akshay opened the wallet near Amitabh Bachchan, it appeared to catch fire. The unexpected prank startled Big B, while Akshay couldn't stop laughing.

The incident also left Saif Ali Khan and the audience surprised. Akshay then casually responded that such things "happen sometimes," making the entire situation even funnier.

After the prank, Akshay finally revealed the photograph he had been talking about.

Akshay actually carried Amitabh's old photo

Akshay showed Amitabh Bachchan a photograph from his younger days. The moment turned from a prank into a warm tribute to the veteran actor.

Big B thanked Akshay for the gesture but wasn't going to let him off so easily. Referring to the fiery prank, he jokingly asked, "Are you playing with fire again?"

Akshay responded that he was only joking.

Amitabh then gave him a humorous warning: "Don't joke with fire."

Akshay's prank steals the spotlight

Akshay Kumar has long been known for his sense of humor and love of practical jokes, and his appearance on KBC 18 once again showcased that side of his personality.

What initially appeared to be a simple question about the photograph in his wallet turned into an unexpected prank involving fire. The reveal of Amitabh Bachchan's younger photograph added an affectionate touch to the hilarious moment.

With Akshay Kumar and Saif Ali Khan appearing on the show to promote Haiwaan, the episode promises plenty of fun, laughter and celebrity banter ahead of the film's September 11, 2026 release.