Housemate Kieran Davidson was affectionately dubbed “the cockroach” by his Big Brother co-stars, thanks to his ability to survive nomination after nomination.
Even when the housemates thought he’d been finally eliminated (or should we say, exterminated) he was scurried away into the white room and given a second chance.
WATCH: Sophie and Kieran are sent to Big Brother’s ‘white room’.
Trapped in the all-white room, a testing form of torture, Kieran, 21, appeared to handle it well.
But it turns out that wasn’t the case at all.
In fact, the YouTube star reached a point of delusion so severe, he says producers were forced to intervene on multiple occasions.
“I thought this is going to be like a reward room, this is great,” Kieran tells New Idea.
“By the time I wake up the next morning I realise this is not a reward, this is a prison, this is going to be hell.”

To pass the time, Kieran explains he began doing exercises taught to him by early evictee SooBong, in an attempt to continue his weight loss. That is when delusion set in.
“It’s a forward step routine that you do on your own and I was doing that in the white room when a producer came in and asked: ‘Are you alright?’
“I said ‘Yeah I’m just exercising, I’ve only been doing it for about 20 minutes’ and she said ‘No, no, you’ve been walking on the spot for two and a half hours’.”

Kieran’s obsessive exercising started causing concern amongst producers behind the scenes, who intervened again when he’d been doing star jumps “for a full hour”.
“The producers and wellness woman who looked after us were getting really worried. They kept coming to me or Big Brother saying ‘I haven’t seen you exercise this much, are you okay?’”

The impact of the white room on both Kieran and Sophie was only briefly touched on during the episode that went to air.
But Kieran revealed to New Idea that both he and Sophie began hallucinating towards the end.
“We got given new white clothes to change into and I see these brown pants, so I said to Big Brother ‘What’s going on here, this is the white room and these are brown pants, where’s the continuity?’
“Sophie and I began laughing, she told me she could see brown pants.
“Then of course I take the money and run and the next morning I thought ‘Hang on, what are these white pants?’
“I was going so mad, the pants had looked like a dark maroon colour to me.”