(I work with IT issues over the phone. Sometimes, it’s hard to hear the customers clearly.)

Me: “Okay, ma’am, and on your username, was that N as in Nancy?”

Customer: “No, N like knife.”

Me: *jokingly* “So, N like pneumonia?”

Customer: *exasperated* “Yes! I said N as in knife! Jeeze, can you turn up your volume or something?”