Alison Hammond was forced to apologise to viewers during Monday's This Morning after Dermot O'Leary turned the air blue.
Around half an hour into the ITV show, Alison had a " Big Brother " reunion with former housemate Kate Lawler as she presented the show's latest competition.
Dermot, 49, then surprised Alison and said: "Let's have a quick look at you and Kate in this iconic moment in the Big Brother house."
This Morning then showed footage of Dermot presenting spin-off show Big Brother's Little Brother, which he fronted from 2001 until 2008.
"Look at you with a bald head, you should so go back to that bald head! Why don't you shave your head? Look how fit you look!" Alison, 47, commented.
Laughing, Dermot responded: "Call my wife now and see if she'd like me to shave my hair off. See how well that one goes down!"
Mother-of-one Alison then asked: "How do you feel when you see yourself like that?"
"I had the most fun on that show," Dermot replied, as Alison continued: "You were so young, you were so good at that show, really good."
Poking fun at her comment, Dermot then asked: "Just at that show?" before picking up a glass of water and saying: "Such a b*tch!"
Alison was shocked at Dermot's comment and quickly said: "Oooooh apologies for that language!"
Dermot seemed unbothered and added: "Oh sorry," before reading the link for the next segment as Alison tried to stifle her laughter.
This Morning airs weekdays at 10am on ITV and ITV Hub.
