David Beckham was mocked by his son Romeo after Arsenal's 3-2 victory against Manchester United at the Emirates on Sunday.
The Gunners re-established their five-point lead over Manchester City in second thanks to Eddie Nketiah's last-minute winner. The result leaves Mikel Arteta's side in a commanding position, as they also have a game in hand on Pep Guardiola's champions.
Footballer Romeo, who is currently on loan at Brentford B, is an Arsenal fan after spending time in the club's academy and was keen to troll his dad at full-time. David remains a United legend after playing 394 senior games under the great Sir Alex Ferguson.
"Sleep tight dad," wrote Romeo on Instagram, accompanied by a post-match selfie outside of the Emirates. A disgruntled David replied: "Whatever."
Ex-footballer David has been a United fan all of his life. He was born in Leytonstone, but his parents supported the Red Devils. The former England captain joined the club from Tottenham's academy in 1991, a year before he made his first-team debut.
David won 12 senior trophies at United - including six Premier League titles and the 1999 Champions League - before joining Real Madrid in 2003. His oldest son Brooklyn also spent time in Arsenal's academy before deciding not to pursue a career in football.
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Romeo also gave up on his dream of following in father's footsteps after being released by the Gunners in 2015 but has revived that ambition during the last few years. The 20-year-old joined Inter Miami, his father's MLS club, two years ago.
Romeo is yet to make a senior appearance for Miami and has been playing for their second team in the MLS Next Pro, the third tier of professional football in the US. He did well last season - scoring two goals and providing 10 assists in 20 league appearances.
Romeo's form persuaded Brentford B to sign him on a brief loan deal. He is expected to return to Miami ahead of the new season and will be pushing for a first-team debut under manager Phil Neville. Romeo is a right-winger - just like his dad.
Sunday's game at the Emirates was a thrilling one. The visitors took the lead through Marcus Rashford's superb strike before Nketiah equalised with a smart header. Bukayo Saka then produced a lovely effort from distance to give the Gunners a 2-1 lead.
United hit back moments later when Lisandro Martinez took advantage of Aaron Ramsdale's mistake to find the net. Yet Arsenal pushed for a winner and were rewarded when the ball fell to Nketiah in the six-yard box. The result leaves United fourth in the Premier League table - 11 points behind Arsenal and six ahead of Tottenham in fifth.
Arteta was understandably delighted with Nketiah's winner, which was confirmed after a VAR check for offside. The Arsenal boss said: "I really enjoyed it... It was a beautiful moment at the end and we get going with our people behind us. It was beautiful."