As I crossed the churchyard.....

...... I heard a clattering and a chattering. Why do we say, 'as quiet as a church mouse?' These mice were busily engaged in deciding which planet in the solar system will burn up first.
"Pluto," said one.
"Saturn," said another, "the rings will give out and that will be the end."
" I don't suppose anyone will listen to us anyway," said the wisest. "After all, our lives are short and meaningless."