You walk into a room with a rabbit holding a carrot, a pig eating slop, and a chimp holding a banana.Which animal in the room is the smartest?
You, hopefully.
Why this works
The riddle plays on the expectation that you will focus on the animals in the room, leading you to think about their intelligence. However, the twist is that the riddle is actually asking about who is the smartest of all: "you," the person reading or hearing the riddle. This clever wordplay makes you realize that the answer is not about the animals at all but emphasizes the importance of human intelligence and awareness.