I know, I know, sometimes I can't help myself. Let's get back to poetry and out of science, I agree.

Calico pie, the little birds fly, down to the calico tree. Their wings were blue, and they sang "Tilly Loo!" till away they flew, but they never came back to me. They never came back, they never came back, they never came back to me.
From Edward Lear. There are more verses but this was the most appropriate.