The woman, who has been given the hashtag #bananawoman by Twitter users, spoke during a discussion about Britain’s future following its divorce from the European Union.
Speaking on the BBC show, she said she was in favour of voting Remain until she saw the fruit and came across “silly” EU restrictions.
“I was voting remain, and at the very last minute I changed my decision and I went to leave,” she said.
“And the reason is because I go to a supermarket, and a banana is straight. I’m just sick of the silly rules that come out of Europe.”
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The audience member said seeing straight bananas changed her mind on Brexit
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It was more than bananas, it's the fact that there's more opportunities out there that we need to see as a country
Question Time audience member
The contribution came as panel members debated whether Britain would economically be better off after Brexit with the Bank of England raising growth forecasts.
The woman added: "It was more than bananas, it's the fact that there's more opportunities out there that we need to see as a country."
Question Time host David Dimbleby jokingly asked: “Have the bananas changed?”
She replied: “If you go to Aldi, they’re a bit…bent."
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David Dimbleby was tickled by the audience member's anecdote
Social media was soon awash with comments about the audience member’s anecdote.
One said: “Much respect to Banana woman on #questiontime for not being afraid to sound like the biggest clown this week, despite strong competition.”
“Jesus Christ. Shape of a banana changed your vote. This is the level of reasoning we are dealing with?” added another, while another said: “Does she realise that she said that out loud and on national television!”
A spoof Twitter account soon emerged, with the handle @EUBananaLady.
It tweeted: “It's non-stop bananas all day for me. I've got that #fridayfeeling #bananabrexit Feels good to finally get it off my chest on national TV.”
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