Last night when DH and I got home from his work I pulled in the driveway and shut off the car. Well he told me to turn it back on so he could add coolant because my water pump's been leaking. (got that fixed today) Anyway, I started my car back up and got out and LOCKED the doors figuring DH would forget. So my car was running with the doors locked and no spare key!!!! He managed to shut off the car by crawling underneath and unplugging the coil or something. Then we had to call the locksmith and pay 60 bucks for them to unlock it.
I would have a spare but my key has one of those chips in it and it's expensive to make a spare. To my defense though I was tired and hungry when I did that. When I get hungry sometimes it takes over and I can't focus on anything else.