Just thought I'd share an exasperating but funny story of my 3yo twins. Hubby and I were standing talking, watching my children play with imaginary food. Suddenly my daughter was having a big tantrum, crying and yelling at her brother. I asked what had happened. She replied that her brother had stolen her (imaginary) pink cake! I asked if she could imagine a new one but she apparantly had to have that specific one. They both argued until I called a stop to this game. I was completely exasperated, and couldn't believe it. My kids love to play together and do have disagreements but i couldn't believe they could even fight over imaginary toys!