'Little Britain' star Matt Lucas has already made his mark as the first personality to act as Big Brother on the new series 'Celebrity Hijack'.
Before the contestants entered the house Lucas chose 20-year-old politician John Loughton as his guinea pig to complete a secret task.
Big Brother gave John a tiny earpiece and instructed him to say only whatever he heard through this earpiece, word for word.
He was told that completing the task successfully would earn him immunity from all evictions but failing would mean that he would be up for every single eviction.
As the other housemates entered the 'Celebrity Hijack' house, Lucas directed John to greet them, make unusual comments to them and behave oddly around them.
As part of his task he was asked to massage other people's shoulders, hug other housemates for too long, ask someone to rub his cramping leg, talk about cake a lot and dance frantically while singing to himself.
After successfully completing the task, Lucas later informed John that he had won a place in the final.
The other housemates were also told about John's task and his immunity from the public vote.
Read our 'Big Brother: Celebrity Hijack' blog here.