Bradley's Disappearing Act

Last night while I was making dinner rolls, Dave was doing some magic for Bradley. He'd put something small in a towel and then "make it disappear". Bradley was fully entranced. Then we decided to make Bradley disappear! So Dave put the towel over Bradley's head and moved it around and when he pulled it off we'd act like we couldn't see him. One time Bradley got off the chair that he was sitting in and walked over to where I was. At this time he was "invisible" to us so we were calling for him. Dave called and called and suddenly Bradley put his hands up to his ears and started saying, "Hello! I'm over here!" Apparently when you magically disappear, putting your hands over your ears helps the people who aren't invisible hear you. At least according to Bradley. So Dave told him (or the air) that he had to come sit back in the chair if he wanted to come back. It took a while but we finally coaxed him into the chair and he came back, just in time for dinner.