Silly Sam and the Invisible Jinni

Sam is in for a big surprise soon after the new kid, Jamil, shows up in class. Jamil, an Arab Jinni, magically makes Sam do amusing things like sudden singing, Dabke dancing, and belly shaking. But for some reason, Jamil is invisible to everyone - that is, everyone except Sam! Pointing to the purple Jinni, Sam insists Jamil is to blame, but nobody believes him. They say, "Silly Sam! No one's there!" What will it take to make Jamil reveal himself and show that Sam isn't so silly after all?