Big Brother has asked the group to take part in an oil wrestling championship, which sees them all slathered in the greasy liquid and grappling in a paddling pool.
Big Brother has given the housemates a wrestling task.
The group were gathered together to hear news of their latest assignment, with camp clothes sorter David the one to announce the rules.
He read from the laminate: "For today's task, housemates must compete in an oil wrestling championship. Housemates will battle against each other in a series of oil wrestling bouts.
"The reader of these instructions will receive a bye into the semi final. This housemate will also be responsible for oiling the competitors before the first stage."
Under the rules of the contest, the hopefuls are not allowed to stand during bouts and must instead fight while on their knees.
The group were then asked to choose their wrestling monikers and to don special costumes, consisting of tight-fitting trunks for the boys and bikinis for the girls.
Rodrigo - known for the challenge as Hot Rod - and Marcus were the first to face off in the ring, with the rest of the housemates watching.
Sophie was backing Hot Rod to win, screaming: "Get him Roddy, get him!"
However, her cheers were not enough to secure Rodrigo victory with Marcus booting him out of the paddling pool-ring twice.