Colin Farrell drops F-bomb on live TV during hilarious interview with Margot Robbie

Not much of a gentleman.

Colin Farrell accidentally dropped an F-bomb during an interview with the “Today” show with his “A Big Bold Beautiful Journey” co-star Margot Robbie on Tuesday.

While promoting their new film on the NBC morning show, Farrell and Robbie gushed about their favorite on-set snack, a “crisp” or “chippy” sandwich, with host Craig Melvin.

“She’s constantly got pregnant appetite for the last 30-odd years,” Farrel said playfully about the “Barbie” actress, who was expecting her first child while filming.

“Tayto cheese and onion, white bread, white, cheap bread, thick butter, and I brought one in every morning for her. That was my job every night was to make that for her,” the “Penguin” actor, 49, added while enjoying the delicious snack himself.

After taking a bite of the sandwich during the live broadcast, he said, “That’s not bad. Is that Tayto? That is Tayto. Is that Tayto? It is.”

“I f–king knew it!” he declared after he received confirmation.

The expletive language caught Robbie off guard, as she stared at her co-star and nudged him.

“Oh my God!” Melvin, 46, said, as Farrell chimed in with a mouth full of food, “They misheard me!”

Fans took to the comments section of the “Today” show’s Instagram post to share their thoughts on the viral moment.

“It’s Collin Farrell… not expecting swearing is poor planning on your part. 😂,” wrote one user.

“I laughed out loud when it happened this morning! Haha everyone’s faces!” added another.

“This was funny and I love when swearing words accidentally make their way through. We are all human… s–t happens! 😂,” commented a third fan.

“Is swearing in the morning, not normal? I start swearing the second I get up lol,” quipped a fourth netizen.

“A Big Bold Beautiful Journey” hit theaters Friday.