Answer:
The King of Pop's stellar dance move
If you happen to wake up at dawn, you'll probably find this covering the lawn.
It's shorter than the rest, but when you're happy, you raise it up like it's the best. What is it?
Where humans breathe liquid.
They are two brothers. However much they run, they do not reach each other.
People take me on walks and I run and have fun. What am I?