At least you have to be a hacker to boost a car these days. I remember when I was a kid my parents' car keys would open every Ford or Chevy on the block. I had a lot of fun running around the parking lot at my brother's soccer games.

That reminds me of the time my cousin lost his car keys. Luckily his parents had an extra set, so he got new copies made, and went on his merry way. A year later, I found the old set under the backseat of my car. Presumably they fell out of his pocket while he was riding with me, and got lodged up under the seat somehow.

Soooo... what to do with an extra set of keys to your buddy's car? Muwahahahaha... gaslight[1] him, of course! So me and a couple of other buddies would randomly drive to where he worked, and take his truck and do little things... change the direction it was facing, or move it about 3 spots over in the parking lot, or fiddle with the presets on his radio.

For like a month, he was spazzing out over this, while we all did our level best to keep a straight face when we were with him. He was convinced it was his brother messing with him for quite a while. Needless to say, he was a bit pissed when we finally broke down and told him and gave him his keys back. But man, what a laugh riot for a time...

[1]: http://en.wikipedia.org/wiki/Gaslighting