(A man walks up to the service desk and wants to return his yogurt.)

Me: “Sure – is it expired?”

Customer: “No.”

Me: “Did you just need a different flavor or something?”

Customer: “No.”

Me: “All right, what’s the reason for returning it?”

Customer: *shakes the yogurt* “Listen to that!” *shakes it again near my ear* “Doesn’t sound right!”

Me: “I see…”

Customer: “Yogurt shouldn’t sound like that.”