Ever try to drink a melted McFlurry? Good luck. The mix of sugar, fat, and crushed candy creates a non-Newtonian fluid. It gets thicker when you move it fast.
Shake the cup. It turns to near-solid goo. Stir it slowly. It flows. Your straw will choke. That’s why they give you a spoon. It’s a physics problem disguised as a dessert.
