DERMOT O'Leary was forced to apologise and co-star Josie Gibson looked shocked as Traitors star Diane Carson swore live on air today.
The latest star of the BBC reality show to be "murdered" appeared after four million people tuned in last night to watch her dramatic funeral.
Retired teacher Diane, 63, appeared on the son with videographer son Ross, 28, though the connection between them still hasn't been discovered by the remaining players.
Diane revealed how her son nearly gave the game away within minutes of the show starting.
She told Dermot and Josie: "He made a mistake within two minutes of getting on the train.
"He was going to say he was from Blackpool which allowed me to say Lytham then I wouldn't have to lie, and Johnny came in and said 'what's your name? Ta da da, where're you from?' And he said 'Lytham'.
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"And I went 's**t', and then Johnny said 'where are you from?' and I said 'Ireland'."
Josie looked momentarily panicked while Dermot hesitated before saying: "It doesn't sound like great Faithful-like language to me. I can only apologise. Rude."
Picking up where she left off, Diane continued: "And then I was in this whole string of lies but Claudia [Winkleman] went 'don't worry about it ' and then everybody forgot."
Her time on the show came to an end in dramatic fashion after she sipped "poisoned" fizzy rosé wine that villain Miles Astari handed her.
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Diane, from Lancashire, told us afterwards: “It just feels amazing that I got this far.
"I really thought I was going out after a three-way tie at the round table earlier on in the game.
“I did a lot better than I expected.”
Host Claudia Winkleman theatrically prepared Diane for her death in last night's how.
Viewers saw Claudia tell the group the poisoned chalice did not kill immediately.
During an elaborate funeral procession, the group had to try to guess which of their number had been secretly bumped off.
Now Diane thinks her undoing was forming friendships, just like the one with Miles that saw her take the cursed wine.
She said: “My strategy really was just to be myself and make sure I didn’t make hugely deep friendships.
“But there were some people whose personalities I was really drawn to, and that detracted from any sort of gameplay I had in mind.
“When you’ve made friends and you’re chatting and sharing bits of your life with somebody, it’s actually then really difficult to think they’re playing a really clever game, because you have made a connection and an assumption that they’re nice people.
“There’s like an inside voice saying, ‘Oh, if they can behave like that in this game then maybe they’re not great human beings’, which, of course, is not true. They were just playing a good game.”
Miles unwittingly became her murderer after volunteering to hand out the vino while plotting with his fellow Traitors, Paul Gorton and Harry Clarke.
The move saw him thrust into the spotlight and, on last night’s episode, the Faithfuls guessed he was a Traitor and he was banished from the castle.
Being the bartender is now something he regrets.
Veterinary nurse Miles, 36, said: “Giving out the drink during the poison challenge, being the one that self-nominated to do that, knowing how that was going to play out, I would definitely do it differently.
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“I think it probably should have been more of a collective decision as opposed to just me, myself and I doing the actual task because it did highlight myself. I put myself on the chopping block really.
“I probably would have made it more of a collective Traitor move as opposed to just me.”