There were two cameras around at the same time?
Someone else stood by your side and took photos, too?
For they apparently did not only have one camera to look into, two look towards "us" (your camera) and two just to your left ... Lovely moment, and I am SURE they had great fun with the water and this water slide on the lawn.
Nicely composed photo with a well undistracting background, and yes, their expressions are fun to look at. Pity about their eyes going in two directions.