A gray old donkey is asked to bray the world awake on a sleepy morning. Short and easy to act out with a good loud bray.
From Mother Goose / Nursery Rhymes (traditional). See the whole collection.
Donkey, donkey, old and gray,
Ope your mouth and gently bray;
Lift your ears and blow your horn,
To wake the world this sleepy morn.
Public domain. Text from The Real Mother Goose (Blanche Fisher Wright, 1916), via Project Gutenberg. View the source edition