Beckham joked his wife Victoria is “lucky” to have him after he posted a balding and toothless picture of himself.
The ex-sportsman shared a computer generated image showing what he will supposedly look like in 2020.
David, who turns 44 next week, can be seen with a receding hairline and a couple of missing teeth.
“Apparently what I'm going to look like in 2020,” he wrote, before joking: “How lucky are u @victoriabeckham.”
He also added a raising eyebrow emoji and the caption: “The future is bright.”
David paid tribute to his fashion designer wife last week as she celebrated her 45th birthday. He posted a shot of Victoria surrounded by candles, telling fans she deserves to be spoilt.
He wrote: “Happy Birthday Mama @victoriabeckham ... Have the most amazing day because you deserve to be spoilt by the little ones @brooklynbeckham @romeobeckham @cruzbeckham #HarperSeven & Me of course..”
But despite the sweet post he couldn’t resist mocking her by sharing a picture of Victoria looking dishevelled after being woken up at 6am by their four children Brooklyn, Romeo, Cruz and Harper.
The famous family celebrated Victoria’s birthday with dinner out. They were also joined by Brooklyn’s girlfriend Hana Cross.
The pair have been dating for a few months, with the American model attending several of the Beckham’s family occasions including partying with them at New Years’ Eve.
But the young couple sparked concern last week after Cross was pictured looking sullen in an exchange with a tearful Brooklyn. Neither party has commented.