She is teaching our 1 year old twins baby sign language ( she saw it on tv, or Oprah I think, and bought all the books). I am sure you have heard how that sometimes identical twins can develop their own twin talk, between them. Well, apparently our two have developed their own twin sign talk! They have been walking around the house little arms and hands flailling about trying to tell us things and we can't figure it out, but apparently the other one knows! ! It is very frustrating, it was bad enough that when they did the real signs I would have to go the my wife or one of the older kids to come interprit, but now they are the only two who understand each other ! ! !