Who wants to start the water?

Last night Jonah got some time alone with mommy because Noah had passed out on the floor. As soon as Jonah realized that Noah was out he started prancing around and playing with trains and blocks excitedly. Then Grace suggested that perhaps Jonah would like to take a bath. At first Jonah didn't want to. But the thing is, every night, in order to get the children upstairs we hold a contest. It is called, "Who wants to start the water?" The answer is both of them racing up the stairs shouting, "Me! I want to start the water! I want to start the water!!!!" Usually Noah wins. But no matter who wins, both children end up protesting and crying because they wanted to start the water. Why do both children protest? Because the child that did not start the water will turn the water off and then turn it back on. Thus starting the water as well. But the restarter will still cry because even though they have restarted the water they under stand that it is not as good as starting it for real. Furthermore, the child that did start it for real, feels that their starting of the water has been unstarted by the other child turning it off and starting it again. He will then want to unstart it again and restarted. This is a nightly occurrence that usually involves pushing and fighting until they realize that I am trying to undress them for a bath, at which point they decide that running in circles to avoid me is a prefferred activity.

At any rate Last night Jonah knew that since Noah was asleep he was bound to make it to the water first. So he did and he started the water.. uncontested. He then realized that victory was not as sweet without a competitor. Apparently while Grace was giving him a bath, Noah woke up and called out for me (Baba was at a lion dance), but he didn't really wake up, just sort of. Grace asked Jonah to call out to Noah and ask him to come upstairs. Jonah then  mouthed the words exageratedly as if he was yelling but instead whispered the words, "Come upstairs Noah!!!"
"Louder." said Grace.
Then he simply mouthed it without saying anything. Why would he want Noah to come upstairs when he had mommy all to himself?