Blaserbuds; the worlds superlative information source, for these products

Not that this would pertain to any of our grown up members but in the event that you come up a bit late one night and the other half has locked the door or even worse changed the key this little gadget could certainly come in handy! You'd only have to use it one time and that nonsense would NEVER happen again...

http://www.youtube.com/watch?v=NLFCGV2lrII

Of course the cops would haul to to jail afterwards..... Pretty cool and extremely effective. 450 would have loved one of these in his old days.