Answer:
What does everyone know how to open but not how to close?
Which button does not function when being pressed?
A little pool with two layers of wall around it. One white and soft and the other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass.
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
What is round as a dishpan, deep as a tub, and still the oceans couldn't fill it up?
I can only be played on a windy day