George has told Pete about a toilet seat prank he is playing on the housemates.

The student called his pal and demonstrated placing a little ball between the seat and the top of the toilet.

"That one will go bang!" he commented. "I tried to do it in the other loo but it didn't work.

"You're a little joker," Pete told him, as they walked to the kitchen. George showed him how he made the ball out of cling-film, then popped it.

"It'll be a right thing when someone goes," he said, proudly. "They be like 'Hey, who put this here?!'"

The surprise could be of help to Imogen, however, who has confessed she has a problem with constapation. She complained: "I haven't gone in five days."

"Massage your tummy," advised Lea, while Pete recommended hot drinks. The ex-Miss Wales added: "And then when I go to the toilet I'll pretend there's no cameras."

"It must feel horrible," Pete sympathised. "It is. I've only had constapation once before."