Manchester City managed to get the better of their bitter rivals on Sunday by defeating Manchester United 3-1 at the Etihad Stadium.
Despite United's good form in recent weeks, Pep Guardiola's side went into the game as heavy favourites and took the lead through David Silva in the 12th minute.
Sergio Aguero then doubled City's lead shortly after half-time when he rifled past David de Gea at his near post.
Jose Mourinho sent on Romelu Lukaku in a bid to try and restore parity, and the Belgian forward made an instant impact by winning a penalty with his first touch after he was brought down by Ederson.
Anthony Martial stepped up and converted from the spot, giving United hope of completing the comeback.
But Ilkay Gundogan killed off the match and ensured City would take all three points when he netted four minutes from time.
It was another brilliant performance by City, who maintain their two point lead at the top of the Premier League table.
They are now 12 points better off than their bitter rivals, who find themselves in 8th behind the likes of Bournemouth and Watford.
Kyle Walker quickly took to Twitter after the game and he could not help mocking United with a short poem.
The tweet has since been deleted but, fortunately, screenshots were taken.
He wrote: "Our opponent was red, we heard the away fans boo, we’re twelve points ahead, And just like violets, Manchester is blue."
Wow. He obviously put a bit of thought into that and could not wait to post it after the game.
It's unknown why Walker deleted the tweet but it he may have had second thoughts over the backlash he would inevitably have received from United fans.
But you've got to admit, that still is pretty funny from the England international.