GM: "What feat do you want?"
Player: "Feet? Why would I want extra feet?"
GM: "Feats make you more powerful and help you a lot in game play."
Player: "If it is that good, then sure I'll take an extra foot."
GM looks puzzled at the player then finally realizes the misunderstanding. "As you wish, you sprout an extra foot."
Having an extra leg and foot is really not helpful. People will look at you funny, you have to have custom pants. The good news is that you can now compete in a three legged race by yourself. Also if only one leg is disabled or cut off you are still able to walk at your normal movement speed.
To be clearn, this is a spoof feet derived from a rather amusing session with a new player.