Countdown presenter Rachel Riley was left hiding blushes and giggles as she revealed letters which spelled out a rude word on the show's famous blue board.
Rachel, 35, had assisted a contestant to choose their random nine letters but started smirking when the Countdown clock starting ticking.
But contestants James and Adam – looked to be struggling to find a word before the penny dropped and as the time was up James shouted out 'Hooters' - which is American slang for breasts.
The pro presenter, who joined Countdown as a maths graduate aged just 22, fought back blushes as she placed the letters on the board to spell out the rude word.
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