The officers are seen following a line of doughnuts leading to a sewer grate with a red balloon tied to it. Clown - 'Hey guys, I have donuts down here! Always good when cops can laugh and poke fun at their own stereotypes! For those who are unfamiliar with the book-turned-movie, Pennywise, the child-eating clown who lives in sewers, uses the red balloons as a calling card. Several police departments in the US have since joined in on the fun and posted their own selfies.