One thing kids like is to be tricked. For instance, I was going to take my little nephew to Disneyland, but instead I drove him to an old burned-out warehouse. "Oh, no," I said, "Disneyland burned down." He cried and cried, but I think that, deep down, he thought it was a pretty good joke. I started to drive over to the real Disneyland, but it was getting late.
The good psychic would pick up the phone before it rang. Of course it is possible there was noone on the other line. Once she said "God Bless you" I said, "I didn't sneeze" She looked deep into my eyes and said, "You will, eventually." And damn it if she wasn't right. Two days later I sneezed.