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?