The eccentric has been holding a silent protest after show bosses left the contestants without milk or Diet Coke.
Brigitte Nielsen failed to prise him out of his sulk, after whispering to him in the bedroom: "We would like to know how you're feeling. At least let's speak."
Last night viewers saw the pundit provoke boy band member Kenzie by calling him "a weak little twerp".
Now bookies say the 64-year-old could be using tic-tac - the complex sign language he uses at racecourses to communicate odds on a horse - to give out odds on his fellow housemates.
Ladbroke spokesman Warren Lush said: "We have suspicions that he is communicating with the outside world via tic-tac body language.
Housemates
"We think he's giving odds on all the housemates, but only people on the courses will understand what he's doing."
The group are in for a surprise tonight when a ninth housemate will walk into the house.
Big Brother bosses say one of the housemates had or is having a relationship with the newcomer.
Among the possibles were Brigitte's former mother-in-law Jackie Stallone or ex-husband Sylvester himself.
John's wife, whom he calls The Booby, and pop star Rachel Stevens, the ex of former Holby City actor Jeremy Edwards, could also be lined up.
The first round of nominations take place tomorrow and will be broadcast on Wednesday.
John remains the 5-4 favourite to exit the Channel 4 show on the first live eviction on Friday night. Tweet

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