The 26-year-old winger, who did not play in the match due to injury, tagged his location as "dancefloor" after the Red Devils clinched a 3-1 FA Cup win at the Emirates Stadium in January.
Goals from Granit Xhaka and Pierre-Emerick Aubameyang avenged the Gunners' earlier defeat and saw them leapfrog United in the race for a top-four finish.
The home victory, which also ended Ole Gunnar Solskjaer's unbeaten Premier League run since becoming Manchester United caretaker manager in December, prompted Arsenal to "reclaim" their dance floor.
Steppin' out onto our 'Dancefloor' ?#ARSMUN pic.twitter.com/6qb3V6KBxH
— Arsenal FC (@Arsenal) March 10, 2019
The England international's cheeky remark was also seemingly on Arsenal players' minds, with Mesut Ozil taking aim at it after the match.
Dancefloor huh!? ??? Superb performance! ? Brilliant result! ? Thank you Emirates Stadium! ?? Proud to be a Gunner! ❤❤ #YaGunnersYa #M1Ö #WeAreTheArsenal @Arsenal pic.twitter.com/EHn7CoHh2O
— Mesut Özil (@MesutOzil1088) March 10, 2019