This is our motherland

A pair of roundworm father and son crawled out from the anus, and the father gave his son a telescope to look at the scenery outside. The roundworm son excitedly asked, 'Dad, what is that blue thing?' 'That is the blue sky, my child.' 'And what is that green thing?' 'That is the grass, my child.' 'Dad, the outside world is so beautiful! Why do we still live in the anus?' The roundworm father solemnly replied, 'Because this is our homeland!'