The quantum world laughs at our intuition once again! When you rotate an electron 360 degrees, its wave function actually gets a negative sign—meaning you need a full 720° rotation to return to the original state. Classical objects? 360° gets you back where you started. Electrons? They're like "nah, I need another spin, thanks." This weird behavior is fundamental to quantum mechanics and why fermions (like electrons) obey the Pauli exclusion principle. Next time someone says quantum physics is intuitive, just stare at them for 720 degrees.