They must stand before 17 eggs, of which 13 are boiled and four are raw, before splatting a housemate of their choice.
All housemates who are struck with raw eggs will be eliminated.
The two contestants who were hit by boiled eggs only will win.
Today's victors will be presented with a roast chicken dinner with all of the trimmings later this evening.
Big Brother continues tonight at 10pm on Channel 5.
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