A quirky poll of 2,000 adults found half believe they are morphing into their own mum or dad.
And on average, this transformation happens at precisely 32-and-a-half years of age.
Other signs one is turning into the person that raised them include the realisation you now dress for comfort instead of style and relying on your kids for tech support.
While 24 per cent were met with the dawning realisation that during arguments in their own younger years, their parents were actually right all along.
Louise Care, for research agency OnePoll, which carried out the study, said: “We learn how to be parents from our own parents – who else?
“So, it’s no surprise to find many adults consider themselves mini-versions of their own mums and dads, at some point down the line.
“It’s interesting that many of the signs you’re becoming a parent are very personal things – that all parents seem to do.”
The study also found just under a quarter (23 per cent) of adults polled find themselves using the same phrases as their parents, including ‘You’re not going out dressed like that!’
But women are slightly more likely to report transforming into their parent than men – 50 per cent compared to 47 per cent.
And 84 per cent believe it was only after having kids of their own, they realised how much their behaviour had started to mirror their own mum or dad.
Of those who believe they are going down that path, nearly two thirds (63 per cent) don’t mind this destiny.
But 42 per cent have actively tried not to become their parent, even if, for 79 per cent, it is eventually inevitable.
Another four in 10 believe starting to turn into a parent made them feel closer to them – and a cheeky 84 per cent of those in relationships will wind up their partner by claiming they are becoming just like their mum or dad.
Of the respondents with children, two thirds have been mocked and had their mannerisms imitated by their offspring.
And for those with children who have reached adulthood, 31 per cent believe they’ve noticed their kids starting to turn into them – the same way they had with their own parents.
Louise Care from OnePoll added: “The circle of life goes on and attributes, mannerisms are passed down through generations.
“So, something funny your mum or dad did – that you find yourself doing today – may have been joked about by family members hundreds of years ago.
“It’s strange to think about but may explain why so many want to pass down positive attributes to their kids.”
THE TOP 20 SIGNS YOU’RE TURNING INTO ONE OF YOUR PARENTS
1. You dress for comfort, not fashion
2. You start to realise that most of the time, your parents were right all along
3. You think all modern music is terrible
4. Falling asleep on the sofa
5. You use the same phrases like: “You’re not going out like that"
6. You save all old boxes, tins and bags ‘just in case’
7. You tell your kids off in the same way
8. You rely on your kids for tech support
9. You get obsessed with weather reports
10. You’re constantly nagging
11. When you got your first grey hairs
12. You pick the same arguments they did
13. You get past the age they were, when they had you
14. Telling the same jokes again and again
15. You tell your kids off by using their full name
16. Regularly using the phrase “Go ask your mum/dad”
17. When you leave the bathroom in the morning, you realise it now has ‘a smell’ you recognize from your own childhood
18. Your kids mock your fashion sense
19. You have the same driving habits
20. You look in the mirror one day and realise you look like them
