Bukayo Saka appeared to cup his ears at the Tottenham fans twice as Arsenal took an early lead in the north London derby.
The Gunners went 1-0 up with just 15 minutes on the clock, with Spurs star Pierre-Emile Hojbjerg turning his header into his own goal following Saka's corner.
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As Arsenal's players ran off to celebrate, TV cameras picked up Saka running from the corner flag to join his teammates.
But before he reached them he appeared to gesture towards the home fans behind the goal, raising his right hand to his ear.
Tottenham then thought they'd equalised just seven minutes later, only for Micky van de Ven's effort to be ruled out for offside.
Saka then rubbed further salt in Spurs' wounds as he netted his side's second.
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Kai Havertz sent a delicious ball over the top for Saka to run on to, with the winger going on to tuck the ball into the bottom left hand corner.
The England international cupped his ears with both hands this time as he ran off to celebrate putting his side 2-0 up.
Saka is now the first Englishman to score 15+ goals in a Premier League season for Arsenal since Ian Wright in 1996/97.
He's also the first Englishman to score home and away for Arsenal against Tottenham since Ian Wright in 1993/94.
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The Gunners dampened Spurs' afternoon even further just 10 minutes after Saka's goal.
Ange Postecoglou's side were undone by yet another set piece, with Havertz rising highest for his side's corner to head past Guglielmo Vicario.
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Things got tense in the second half for Arsenal, with a David Raya blunder gifting a goal to Cristian Romero.
Heung-min Son then converted a penalty to make it 3-2, but the Gunners managed to hold on.
The Gunners are now four points clear at the top of the Premier League, with Man City in second with two games in hand.
Pep Guardiola's side face Nottingham Forest in the late kick-off this Sunday.