It has become its own series after gaining popularity as a segment on Ant & Dec's Saturday Night Takeaway.
And Declan Donnelly's mother Anne makes a surprise appearance on Stephen Mulhern's In For a Penny on Saturday's episode.
The presenter, 42, is left stunned after he bumps into Anne on the street and admits her son Dec, 43, will go 'off his nut'.
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Here she is: Declan Donnelly's mother Anne makes a surprise appearance on Stephen Mulhern's In For a Penny on Saturday's episode
Close bond: Dec is pictured with Anne in January 2017, alongside Ant McPartlin and his mother Christine
Speaking to the camera, Stephen says: 'It's time for our final game, In For a Penny, In For a Grand.
'You are not going to believe who I have just met... this is Anne, Dec's mum. Literally this is really Dec's mum, it's not a gag is it, Anne?' to which which Anne replies: 'No!'
However, things don't exactly go to plan when Anne admits that she doesn't have a penny in her handbag, with Stephen saying: 'Are you serious? Dec's going to go off his nut!'
Declan has a close bond with his mother Anne and even named his first child with wife Ali Astall in honour of her - with the name Isla Elizabeth Anne Donnelly.
Wow: The presenter, 42, is left stunned after he bumps into Anne on the street and admits her son Dec, 43, will go 'off his nut'
