We have all seen the different kind of outlets that are in our walls. They seem to be different wherever you go. A lot of people wonder why there are three on some while there are only two on some others. On the outlets that have three holes, two of them actually go to the same source. The one on the left and the one on the bottom are the neutral and ground wires and when you follow them you realize they go to the same place.
This way even if you touch it, you would still be safe.