Too much

(While taking a bath, pretending to be a Milkshake stand. She hands me a cup of bathwater....)

Elizabeth: "....and here is your milkshake! It's our special, Blueberry-Strawberry-Mango!"

Me: "Thank you, how much do I owe you?"

Elizabeth: "IT'S FREE!"

Me: "Really??"

Elizabeth: "Yes. We have TOO MUCH MONEY!"