Answer:
I am a king but also a common device of measure. What am I?
What loses its head every morning only to get it back every night?
Nothing specific, but more than a few. This many clustered, together will do.
Turns us on our backs, and open up our stomachs. You will be the wisest of men though at start a lummox.
This is the main ingredient in spaghetti and Mac-ยญN-ยญCheese.
What is big and yellow and comes in the morning, to brighten mom's day?