The group were instructed to split themselves into pairs for a test of "speed and stamina", in which they would attempt to gulp down as many mini burgers as possible while racing around a road track dressed as fat truckers.
As he was left without a partner when the housemates separated, Aden Theobald was given the task of serving the competitors their food from a 'Burger Hut' establishment in the garden.
Watch housemates change into their trucker outfits for the task below:
After their victory was confirmed by Big Brother, Jay and Anton were called into the Diary Room to collect their reward - a feast of more burgers.
The pair were also handed fast food-themed costumes - a hot dog outfit for Jay and a cheeseburger number for Anton - to wear for the rest of the day.
Upon spotting the boys emerging from the Diary Room in their new clothes, a smug Aaron Allard-Morgan declared to the losing housemates: "We won the respect of the group and we don't have to dress up as hotdogs or burgers."
Housemates yesterday won Anton a birthday party by convincing him that a single he produced on the outside world was due to top the UK charts.
> Big Brother: Housemates faced with eviction betting task
Watch the housemates compete in the fast food task below: