Nice problem to have.

The sun is unforgiving. And all I wanted was a large Diet Pepsi. They
poured the drink, and I realize that all I have is a hundred dollar
bill.

"I'm sorry, it's all I have, can you change a hundred?"

"No, we don't take them."

"Don't take them? Like, ever?"

"Nope."

"Is that even legal?"

"What do you mean?"

"I mean, this note is legal tender, for all debts, public and private.
It says so, right on the bill."

"Do you want me to call my manager?"

"Forget it."

I'm on break, hot and thirsty.