Chelsea manager Graham Potter offered a blunt response to Kai Havertz's celebration during their 2-2 draw with Everton.
The German sent Jordan Pickford the wrong way from the penalty spot to restore the Londoners' lead at Stamford Bridge on Saturday evening before goading the England number one with his celebration.
It's the latest instalment of their bubbling rivalry, with the former Bayer Leverkusen prospect appearing to have some needle towards the Blues backline. It wasn't the first time that there has been back-and-forth between the two clubs - last season, Havertz was involved in an ongoing battle with Yerry Mina and Pickford, with the Chelsea attacker lucky to escape punishment after reacting to the defender.