ANT and Dec pranked old pal Cat Deeley as they photobombed her shoots in a Saturday Night Takeaway joke.
The presenter was taking promotional photos for her new children’s book, The Joy In You.
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The photographer was giving Cat instructions as she stood in front of a huge cut out of her book.
But as Cat posed, she didn’t realise her former SM:TV co-stars were popping into the background.
Both Ant and Dec poked their heads through the koala bear’s faces.
Cat is joining the Geordie duo for this week’s Saturday Night Takeaway – where they will also be reviving their Friends spoof Chums.
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The Sun revealed they will be reviving the cult skit from SM:TV, with even the set being rebuilt.
A show source said: “This is the reunion SM:TV fans have been calling for. It’s going to be epic.”
Ant, Dec and Cat presented the Saturday morning ITV show from 1998.
Chums featured a fictional romance between Cat and Dec with celebrities popping up in cameos for hilarious storylines.
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It was so popular that when Ant and Dec left in 2001, Chums was shown as standalone repeats on CITV.
It comes after one-off show The Story of SM:TV Live at Christmas gave fans hope of a reboot.