Because it sounds like a stutter. “Half of… one and a half…” Your brain trips over its own shoelaces. It’s the verbal equivalent of a cartoon character walking off a cliff.
Also, it’s a classic example of kitchen brain. You’re trying to halve a recipe for brownies, and suddenly you’re doing calculus. Your measuring cup collection judges you silently.
The geometry of a cup
Picture a standard 1-cup measure. Now imagine 1.5 of those. It’s a small mountain of flour. Halve that mountain, and you get a neat little ¾ cup hill. Satisfying, right?
Fun fact: ¾ cup is exactly 12 tablespoons. Or 36 teaspoons. Or 177 milliliters, if you’re feeling metric. It’s the Goldilocks of amounts—not too big, not too small.