A swimming game where you can't imitate you friends strokes.
Determine a swimming course. Players line up at one end of the swimming course. The first player swims across the course in a manner of his or her own choosing. The second player then swims across the course in a manner that is different from the first player. Each player takes a turn swimming across the course without copying any of the prior strokes or methods used to traverse the area. Any innovative propulsion activity is acceptable. Player positions change with each new round.