Answer:
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
What is it that given one, you’ll have either two or none?
You use it between your head and your toes, the more it works the thinner it grows.
When the day after tomorrow is yesterday, today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What is the day after this day?
What can be swallowed, But can also swallow you?
I am black within and red without; with four corners round about. What am I?