The 'Pure Shores' hitmaker leaves her teenage son red-faced when she performs the band's 1997 hit, which features the line ''you know I want to be a diggy down boy'', but that won't stop her.
In an interview with the I Paper, she said: ''He's like: 'Mum, do you have to perform that song?' I'm like: 'Yeah, we do! Don't come if you don't like it!' But I get it: he's embarrassed. He's 17 years old and I'm his mum.''
And her bandmate Shaznay Lewis reminded her: ''Yeah! And his mum's singing: 'I wanna be diggy down!'''
The 43-year-old singer split from former Oasis star Liam in 2013 after it emerged he'd fathered a child, daughter Gemma, now five, with journalist Liza Ghorbani, and her heartbreak inspired All Saints' 2016 comeback single 'One Strike'.
While Nicole initially found it ''difficult'' to perform such a deeply personal song, she now finds it ''funny''.
She said recently: ''It literally floored me. It was difficult to perform at first. I had to think, 'OK, hold it together'.
''But I don't feel that way about him any more at all, so it's actually quite funny now.''
Despite the previous tension between them, the 'Never Ever' singer is still in contact with the 45-year-old rocker.
Speaking of the 'Wall of Glass' hitmaker - who is also father to 19-year-old Lennon, his son from his first marriage to Patsy Kensit, and Molly, 21, his daughter with former Kill City star Lisa Moorish - she said: ''[We have a son together] so we have to talk. But it feels like a lifetime ago now.''
For the rest of the group - which is completed by Melanie Blatt and Nicole's sister Natalie Appleton - writing 'One Strike' was a natural thing to do because the blonde beauty's heartbreak consumed them all.
Songwriter Shaznay said: ''With 'One Strike', I was so consumed by someone else's situation.
''I didn't purposefully set out to write about someone else's life, it was just feelings.''
Natalie added: ''Nic's life was our life. We were affected by it every day. It was our sister.''
Janelle Monáe parties and drives with her girl squad in the video for her latest single 'Crazy, Classic, Life', taken from her album 'Dirty...
Continuing the softer sound of their 2015 release 'That's the Spirit', BMTH are about to release 'Amo' (January 25th 2019) featuring their newest...
To coincide with the new BBC mini-series adaptation of leporine epic Watership Down, Sam Smith has unveiled a new single entitled 'Fire on Fire'.
Her first single since leaving the jungle on 'I'm a Celebrity... Get Me Out of Here!', Fleur East drops the super-choreographed video for 'Favourite...
Dropping the video for his latest album's second single, 'Excuses', is Olly Murs just months after the release of 'Moves' featuring Snoop Dogg.
Professor Green and Rag'n'Bone Man have teamed up for a heart-wrenching video for their single 'Photographs'.
He released 'Everythang's Corrupt' last month, and now Ice Cube has dropped a video for the record's third single 'That New Funkadelic'.
Dappy has unveiled a new stripped down number entitled 'Count On Me' more than six years after the release of his debut solo album.