I like this picture by Henri Cartier-Bresson. This picture uses the simplicity of a black and white picture and is simple in general. The reflection of the kid in the water gives a really nice effect that attracts viewers to view this picture.
The good old times of childhood :) when parents would actually let their kids spray each other with the garden hose. I'm glad my mom let us have water fights :) we used ice cream buckets AND the garden hose.