Show the image without giving any explanation.
Ask the question: “Which horse is in front?”
Ask each person to justify their answer with a specific detail (mane, reins, shadows).
Then reveal the solution… and observe the reactions.
You’ll see: it’s not so much the “correct answer” that’s amusing, but the way everyone defends what they think they see. And if you’ve been tricked, smile: it simply proves that your brain is quick… and that it loves surprises related to visual perception .
Whose head is this horse’s?
