A few years ago my dad left me in the new (well, used, but new to us,) car to go do something - it wasn't the nicest area, so he locked me in 'just in case.' So I sat in the back reading, and I must've leant on the armrest or something, because the alarm went freaking batpoop. Luckily, my dad wasn't too far down the road and came back to sort it, lol.