Viewers of Loose Women were left stunned as Janet Street Porter called Andrea McLean a naughty word on today's show.
The panel were discussing "noisy eaters" in the cinema and Andrea admitted she likes to eat while watching a movie.
She said: "Half the fun at the cinema is that you [pick up food] and wait for a noisy bit [of the film] and then you eat it."
Janet said: "It's so common to eat at the cinema and at the theatre."
Andrea told her: "That's the nicest thing you've ever said to me," to which Janet blurted out: "You're a [expletive]."
If you didn't catch it, Janet said a word that begins with the letter 's' and rhymes with 'shut'.
Coleen Nolan exclaimed: "Finally! I’ve been waiting for this moment. You should be proud of being called that, I would be! I’m trying to be!"
The presenter later apologised to viewers over Janet's naughty slip of the tongue.
She said: "I have to apologise to anyone who may have been offended by the use of a certain word by Miss Janet Street Porter."
Andrea then added: "I couldn’t apologise for it because I don’t even know what was said."
Viewers were in hysterics over Janet's outburst and shared their thoughts on Twitter.
One person said: "Janet Street Porter actually called Andrea a [bleep]! Is she OK?"
Another wrote: "Has Janet actually just called Andrea a [bleep]?!?" while a third tweeted: "I had to jump on the hashtag when I heard Janet Street Porter calling Andrea a [bleep].
"I wasn’t at all disappointed... it was so unexpected and hilarious. Clearly a joke about her 'dirty' habit of eating in cinema, clearly a classic JSP moment."
Earlier in the segment, Janet spoke about noisy eaters in the cinema.
She said: "I went to the National Theatre a few months ago and posh people sit down with their big box of chocolates, they open the box and then open each individual chocolate all through the first half."
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