RACHEL Riley is left in hysterics after spelling out the word 'spunk' on the Countdown board.
The 33-year-old star was appearing on Channel 4's, 8 Out Of 10 Cats Does Countdown.
As host Jimmy Carr chats to funny men Sean Lock and Joe Wilkinson, Rachel is seen playfully moving letters around on the board.
Comedian Jimmi notices and quips: "What are you to, Rachel?!" as she steps away from the board revealing the hilarious word.
Laughs and cheers are heard from the audience as she gets a round of applause for the playful joke.
In the latest episode, Sean and Joe take on guest captain, actor Richard Ayoade, and Irish comedian, Aisling Bea - who had decided to dress up as Rachel and even wear a blonde wig to mimic the maths whizz.
It was revealed over the weekend that Rachel is to be given extra security after receiving "constant" abuse from trolls for her comments about anti-Semitism.
The maths whizz said she has been targeted by Labour supporters on Twitter for slamming the party and leader Jeremy Corbyn amid the ongoing row.
Recently, the blonde beauty shared a rare selfie with her Strictly Come Dancing boyfriend Pasha Kovalev in honour of his 39th birthday.
Rachel captioned the photo: "I am now dating a very handsome 39 year old" alongside a series of heart, kiss, and birthday emojis.
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