Despite telling the other housemates otherwise, it was Federico who got stage fright and failed the task.

It's the second week running that the Glaswegian has blown the housemates' chances of task success.

Big Brother asked him to recite the Cub Scout Law, but the 23-year-old recited the Cub Scout Promise instead.

Though the housemates do not yet know it was him who mucked up, will anyone have noticed his plaintive explanations and wagging head?

"I said the Promise, word for word," he told the assembled clan, perhaps not realising his error.

"I did not get one word wrong, I'm telling you," he went on, "I took 25 seconds at least. Thought it over in my mind.

"Last week," he continued, referring to cock-up numero uno, "I even said to you guys I think there's something wrong here.

"But as far as I'm concerned, I rattled off the Promise, I said it word perfect."

There's no disputing he rattled off the Promise word for word, it's just he was supposed to rattle off the Law.

The big question is, does Federico know he made the error?