Comedian Lucy Lucy Beamount said first: “You know what you do in a well, don’t you?”

The others were confused, but Celia who said: “Put the pussy in.”

Her words – relating to an old nursery rhyme – saw the others turned speechless, barely holding back laughter.

“Oh come on, we were all thinking it,” insisted Celia as the others insisted they hadn’t a clue.

It’s not the first time she’s had her co-stars in fits, however.

As well as regularly swearing, the 73-year-old actress stole the show on Wednesday night when she passed wind at the start of another task.

As the rasp was heard and Celia chuckled, host Claudia said: “What just happened?”

Prompting howls of laughter from fellow celebrities, Celia replied: “I just farted, Claudia. It’s nerves, but I always own up.”