We've all wanted to be a little younger every now and again, haven't we? And if it hasn't happened since you were last denied entry to a restaurant's soft play area, it might be on the horizon as you begin to hit your late 20s.
Worryingly, if it's happening now it's almost certainly going to be an occurrence when you reach your 60s. Take Emile Ratelband as a prime (well not quite) example.
The Dutch man, age 69, is so set on hacking two decades off his age that he's begun a legal battle to be recognised as a 49-year-old - he says that he gets more response on Tinder that way. Needs must and all that.
69-year-old... sorry, 49-year-old Emile Ratelband. Credit: CEN
So what's his argument? Well, he says that if transgender people are allowed to self-identify, he should be allowed to change his date of birth because doctors said he has the body of a 45-year-old. Erm, ok mate.
Wonder if he's be so determined if they told him he had the body of an 80-year-old.
Anyway, the entrepreneur and self-help guru is suing his local authority after being refused amendments of his age on official documents.
Mr Ratelband's case has now gone to a court in the city of Arnhmen in the eastern Dutch provice of Gelderland.
Emile Ratelband. Credit: CEN
The pensioner was born on 11 March 1949, but says he feels at least 20 years younger and wants to change his birth date to 11 March 1969.
Mr Ratelband said: "I have done a check-up and what does it show? My biological age is 45 years. When I'm 69, I am limited. If I'm 49, then I can buy a new house, drive a different car. I can take up more work.
"When I'm on Tinder and it say I'm 69, I don't get an answer. When I'm 49, with the face I have, I will be in a luxurious position.
"Transgenders can now have their gender changed on their birth certificate, and in the same spirit there should be room for an age change."
The Dutchman said he is discriminated against because of his age, and that he encounters problems in society on a daily basis. He complains that companies are reluctant to hire someone the age of a pensioner as a consultant.
And he says his move would also be good news for the government as he would be renouncing his pension until he reaches retirement age again.
The judge said that he had some sympathy with Mr Ratelband as people could now change their gender which would once have been unthinkable.
But the court said there would be practical problems in allowing people to change their birth date - as it would mean legally deleting part of their lives.
The judge asked Mr Ratelband: "For whom did your parents care in those years? Who was that little boy back then?"
The court is due to deliver a written ruling within four weeks.
Featured Image Credit: CEN