Logic Riddles

Question: What makes a hotel hot even when below zero temperatures?

Question: Timmy's mother has three children. The first was named April. The next was named May.

What is the final one's name?

Question: No matter how much rain comes down on it it won't get any wetter.

What is it?

Question: Wednesday, Tom and Joe went to a restaurant and ate dinner. When they were done they paid for the food and left. But Tom and Joe didn't pay for the food.

Who did?

Question: A man shaves several times a day, yet he still has a beard.

Who is this man?