Bookmakers Ladbrokes have been forced to cut the odds of Science being evicted from 9/4 to 5/6 after he argued with every member of the house on separate occasions, making Oralith cry as well as causing the group to fail the dog-training task by taking off his collar.
In contrast, Orlaith's odds of eviction have drifted from 1/3 to 5/6, as the model's game plan to flash her surgically enhanced 30D chest and string bikinis appears to be paying off.
Ladbrokes spokesman Warren Lush said: "The money has poured in for Science and we've been forced to slash the odds on him going on Friday night. We now can't split the Leeds rapper and Orlaith and rate both their chances at 5/6 - it is toss of a coin time."
When Science took off his collar during the last day of dog-training camp, the other housemates warned him they would fail the task, but he refused to apologise saying, "I'm not bothered".
The group now have £1 to live off each day for the next week instead of a luxury shopping budget.
Meanwhile, Geordie dancer Anthony's odds on winning the £100,000 prize money has been cut to evens from 2/1 -- making him one of the most hotly tipped housemates to win in 'Big Brother' history.
Science is next up with 3/1, gay Tory speechwriter Derek -- once a rank outsider on 33/1 -- is joint third favourite on 8/1 with nerdy engineer Eugene.
Makosi and Kemal, the pair dubbed 'Team Diva', who were once favourites to win, have seen their fortunes reverse with odds of 10/1 and 12/1 respectively.
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