Inviting them to the Diary Room earlier, the pair were challenged to burp in Aaron Allard-Morgan's face.
Each successful belch will win either a glass of wine or a can of lager.
They have one hour to complete the task and will be provided with fizzy drinks by Big Brother to aid them.
However, they are not allowed to burp more than 15 times. Earlier in the series, Aaron revealed that burping was his pet hate.
Watch some of the best burps from today's task below:
These scenes will be shown tomorrow (Friday) at 9pm on Channel 5.
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