Choose the Appropriate Time and Audience.
Use a Hook to Engage the Listener.
Keep It Concise.
Highlight Emotional Elements.
Don't Rush.
Poke Fun at Yourself and Nobody Else.
Vary Your Rate of Speech and Volume.
Ask Listeners to Imagine.
I think its an Idiom. I don't see like or as. So no simile. I don't see he is something like a marshmallow. - No metaphor. I also don't see a non-human thing doing human things- the grass was dancing in the wind. My answer would be an idiom.
Hope this helps!
