Directions for how to get a wave pattern:
Okay, first you get a bunch of people together, all sitting down in a room and facing (roughly) the same direction. Next, starting at one side of the room, people jump up and stick their hands in the air (preferably while screaming loudly). Then the next group/section of people jump up, arms waving, while screaming loudly. Then the next group/section has their turn, etc., etc. all the way across the room.
Repeat from * to * until everyone is thoroughly sick of it.
Did I get that about right?