Clean riddles with simple answers

What has a foot on each side and one in the middle?

The day before two days after the day before tomorrow is Saturday. What day is it today?

What is something you will never see again?

What can you swallow than can also swallow you?

What bird can lift the most?

What kind of room has no doors or windows?

What can you hold in your left hand, but not in your right hand?

Which city is three fifth chick two third cat and 50% goat?

A container without hinges, lock or a key, yet a golden treasure lies inside me. What am I?

What has to be broken before you can use it?