Funny Riddles

Question: I'm round at the ends and high in the middle.What am I?

Question: You have 2 coins that add up to 35 cents. One of the coins is not a quarter.

What kind of coins do you have?

Question: I turn polar bears white
and I will make you cry.
I make guys have to pee
and girls comb their hair.
I make celebrities look stupid
and normal people look like celebrities.
I turn pancakes brown
and make your champagne bubble.
If you squeeze me, I'll pop.
If you look at me, you'll pop.

Can you answer the riddle?

Question: 100 feet in the air, yet its back is on the ground.

What is it?

Question: To give me to someone I don't belong to is cowardly, but to take me is noble.
I can be a game, but there are no winners.

What am I?