Riddles

Bet you can't figure these out on your own....

Question: What word begins with E and ends with E, but only contains one letter?

Answer: Envelope!

Question: What has many rings, but no fingers?

Answer: A telephone

Question: I go all around the world, but I never leave the corner. What am I?

Answer: A Stamp

Question: What are two things you can never eat for breakfast?

Answer: Lunch and Dinner