The former Celebrity Big Brother housemate headed backed into the Borehamwood Bungalow with fellow all-stars Marnie Simpson and Nicola McLean for the latest shopping task.
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But the 36-year-old doesn’t appear to be having a great time as she mingled with this year’s contestants.
In a clip that will be aired on tonight’s show, Gemma is seen taking a dip in the hot tub when Chanelle decides to let control of her bladder go.
The Only Way Is Essex star was in disbelief as she shouted: “You’re weeing by me!”
“No that’s really bad,” she added.
Gemma became increasingly furious as she said: “Do you know that’s so f*g bad, this is a p***stake.”
As her fellow housemates laughed at her clever choice of words, the reality star was left fuming.
Later on, Gemma couldn’t get over the disgusting moment and said to housemate Ellie: “I feel violated that I’ve been pissed on. My legs feel like they are itching.”
“Babe it ain’t my style. No one has ever peed on me. They wouldn’t have the cheek to do it,” she added.
Unfazed by the situation, Ellie made a shocking statement which left Gemma even more revolted.
She declared: “I’ve p****d in someone’s mouth before.”
Big Brother continues tonight on Channel 5 at 10pm.