A bored looking Simon buzzed 'no' to Paddy and dance partner Nico over the weekend but was then left looking rather stunned when the quick-footed duo launched into an energetic routine that saw 79-year-old Paddy whizzing around.
Chatting on ITV's This Morning today, Paddy said of Simon's buzzer: "It didn't really [affect] me as I don't see very much. Nico was moving me around.
"It's not like an ordinary show where one stands there and can see the audience and gets nervous. He's the one who sees everything and has to make sure he's watching the right camera. I was just going around like a whirling dervish!"
Paddy said she had complete faith in Nico not to drop her during their high-energy routines, saying: "He's never dropped me in all the years that we've been doing it. And touch wood he never drops me!"
Viewers of BGT heard Paddy recalling how she was a keen dancer as a child and young women, but that she gave it up when she married at 22.
"With a husband and four children, there was no time for dancing," she said. "But when [BGT] started and Nico wanted us to do a lot more, I checked with the kids and they said this was okay for them. I'd given it upfor them, and dad would have approved."
Paddy is through to the live semi-finals of BGT after judge Amanda Holden pressed her gold buzzer, giving her an automatic pass regardless of whether the other judges agreed or not.
"It was really special," said Paddy of that moment. "To be the first act to get it was really, really super."
While plenty of viewers applauded Paddy's success on the ITV show, her inclusion has also sparked controversy after it emerged she'd previously won a Spanish talent contest and had appeared on UK TV shows before.
However, a rep for BGT and Simon himself have both spoken out to defend her.
The spokesperson said: "Anyone can apply for Britain's Got Talent whether they are professional or amateur, irrespective of their past experience and all contestants are auditioned on merit. None of the judging panel had seen or knew of Paddy before her audition and her act was a complete surprise to them all."
Simon, meanwhile, tweeted: "Don't knock Paddy for performing on a Spanish talent show. She is British and wants the chance to perform in front of our Royal family. Let her have that chance. You the viewers will decide."
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Watch Paddy and Nico's performance below: