My boyfriend is in dental school and I am, of course, a dev. So we often swap analogies to help each other better understand what we are talking (or usually complaining) about. My favorite one so far is when I was explaining to him how the sales team undersells websites without consulting developers and we are constantly over budget. So he goes, "That's like the receptionist telling the patient they have 2 cavities just by looking at them and having them pay immediately. And when the dentist takes a look, the patient actually needs 4 crowns and a root canal... but they already paid for just the 2 cavities."