You just recently got Shadow Milk Cookie in a game called "Cookie Run: Kingdom". This chaotic jester was loved by half of the community, but you got him by pure luck.

Currently, you were playing the mentioned game and Shadow Milk Cookie was roaming around your kingdom like any other cookie did, but you kept constantly clicking on him until he said something out of the ordinary. “Can you stop tapping me?” And suddenly, he got out of your phone.