𝗧𝗵𝗶𝘀 𝗶𝘀 𝘄𝗵𝘆 𝗜 𝗽𝗿𝗲𝗳𝗲𝗿 𝗲𝗺𝗮𝗶𝗹𝘀 𝘁𝗼 𝗽𝗵𝗼𝗻𝗲 𝗰𝗮𝗹𝗹𝘀!
Customer sends me a requirement email and yet still phones "for a chat". Mulling over the request, he adds a monitor to his original request. I go ahead and order his stuff, including the monitor. This morning I opened his PO, and there's no monitor. I email him, and he rings:

𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿: "Ah, I wanted to try the monitor we have."
𝗠𝗲: "I know, you said that, but you also said you still needed a monitor."
𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿: "Yeah, I was thinking I might need another PC, so I would need a monitor."
𝗠𝗲: "You never mentioned a PC?"
𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿: "Yeah."
𝗠𝗲: "I've ordered it now."
𝗖𝘂𝘀𝘁𝗼𝗺𝗲𝗿: "Hmm? OK."