A rainy day

I asked "O": "Where is all this water coming from?” He said: "From up there". So I asked. "I wonder how the water gets up there". He said "It jumps." Another kid said: "It lives up there". A girl next to them said. “It goes up and down.”
“M” was inside putting his rain coat and when he came out he said: "It stopped" So I asked “Why does it stop?” He said: "The cloud makes it stop."