Coke

It's either Coca-Cola, or Cocaine.

Person 1: "Hey, can i get some money for a coke?"
Person 2: "Sure. Have some money."
Person 1: "Excuse me, but isn't it like just 5 dollars?"
Person 2: "The price went down?!"
Person 1: "I'm talking about Coca-Cola..."
Person 2: "Ohh..."