Display a picture book of people in different jobs-a doctor, chef, plumber, police officer, welder, fire fighter, artist, farmer, etc. A spectator "freely" selects one picture.
A prediction envelope-in full view the whole time-is now opened. "And here is my prediction, the fire fighter-when he was just a baby!" The performer removes a picture of an infant in a baby bonnet! (Groans and laughs from the audience.)
"Well, he knew from the very beginning what he wanted to be when he grew up, and of course, he decided to become...a fire fighter." The picture is turned around, now revealing the spectator's choice!
The very clear and bold drawings make this great even for large audience.