A viral optical illusion has left millions of people confused after many viewers initially mistook a close-up image of a **man’s arm and hand tucked into a trouser pocket** for an unusually skinny, hairy neck. The forearm creates the illusion of a neck, the wrist bone resembles an Adam’s apple, and a braided bracelet looks like a necklace. Even after discovering the real explanation, some people say their brains still automatically see the “neck,” showing how easily our minds can interpret familiar shapes in unexpected ways.
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