Customer: “Hi, I’d like a decaf espresso.”

Me: “Certainly, ma’am.”

(I deliver the espresso to the table.)

Customer: “Excuse me, but asked for decaf.”

Me: “Yes ma’am.”

Customer: “But this isn’t decaf.”

Me: “I assure you, madam, that it is decaf. We use different machines for decaf and regular.”

Customer: *gesturing at the crema* “But I can SEE the caffeine!”