The noisy neighbours currently have the stereo pumped up to eleven in Manchester, as City have earned back the bragging rights over their more illustrious rivals at Old Trafford.
Manchester United have had a terrible season under David Moyes - finishing seventh in the Premier League and failing to qualify for Europe.
Meanwhile Manchester City have won a deserved second Premier League title in three years under the guidance of the shrewd Manuel Pellegrini.
With all things considered the rivalry between these two clubs should be at an all-time high. Although it seems a couple of the players from Manchester are currently best of friends.
Rio Ferdinand, who announced this week that he will be leaving United this summer, and Sergio Aguero, who scored the winning goal to win the Premier League in 2011-12, are currently in Singapore on sponsorship duties for SingTel.
And the pair seemed to be getting on pretty well, but they did still wear the colours of their respective clubs.
Plenty of photos are doing the rounds on social media - but I just wonder how Rio and Sergio got on so well. Anybody who saw the title winning celebrations at the weekend will know that Aguero's English still, lets say, needs some work...