Answer:
My prefix is food. My suffix is rude. My infix comes in rounds. I keep you off the ground. What Am I?
Crooked as a rainbow, and slick as a plate, Ten thousand horses can't pull it straight.
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
You’ll have me at night and if you remove the first letter I denote the top, such as on a train
what is a duck that is in Starbucks?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?