Along with Zen's atm machine - VIN number - VIN stands for Vehicle Identification Number! What's really bad is that I actually say this daily at work because if I say what's the VIN? (without the redundant "number" at the end) I just get blank looks, or "huh?" At least when I type it, I refuse to type VIN# like some of our people do. Maybe I should just start saying the entire thing instead of the acronym - what an idea! (Though the times I've said that, the response has been, "oh, is that the VIN number???" Yeah it is is.