Riddle: A dozen Royals gathered round, Entertained by two who clowned. Each King there had servants ten, Though none of them were also men. The lowest servant sometimes might, Defeat the King in a fair fight. A weapon stout, a priceless jewel, The beat of life, a farmer's tool. What is it?
Answer: A Deck of Cards.
Riddle: Does a ton of feathers or a ton of bricks weigh more?
Answer: They both weigh a ton.  
Riddle: What do bumblebee, reverse flash, and a banana have in common?
Answer: The colour yellow.
What is it Riddles
Riddle: In a tunnel of darkness lies a beast of iron. It can only attack when pulled back. What is it?
Answer: A bullet.
Riddle: What house has post on top, A roof at the bottom, While the rain comes from below?
Answer: A boat.
What is it Riddles
Riddle: There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends. What is it?
Answer: Boxing.
Riddle: What position do pigs play on the baseball field?
Answer: Short-stop.
What is it Riddles
Riddle: What do you carry everywhere you go?
Answer: Your shadow!
Riddle: What can bring back the dead; make us cry, make us laugh, make us young; born in an instant yet lasts a lifetime?
Answer: Memories.
Riddle: Man walks over, man walks under, in times of war he burns asunder. What is it?
Answer: A Bridge.
Riddle: Do you know anything that has four eyes?
Answer: Yes, Mississippi.
Riddle: Coffee can go in, but tea cannot. Riddles can go in, but questions cannot. Quizzes can go in, but surveys cannot. Spoons can go in, but forks cannot. Green can go in, but red cannot. Glass can go in, but plastic cannot. Doors can go in, but windows cannot. Why can some go through the green glass door and others can not?
Answer: Green Glass Door all have double letters.  Therefore, only the words with double letters can pass through the Green Glass Door!
Riddle: What is that which is less tired the longer it runs?
Answer: A wheel.
Riddle: What can go forward but never back?
Answer: Time.
Riddle: You use me to clean, but the powerful take me for a ride. What am I?
Answer: A broom.
Riddle: What's the difference between gossip and a mirror?
Answer: One speaks without reflecting and the other reflects without speaking.
Riddle: What has fifty heads and fifty tails?
Answer: Fifty pennies or coins.
Riddle: When it's gone bad and flat I hate it but when it's fresh and fizzy I love to taste it. What is it?
Answer: Soda.
Riddle: Which part of the mermaid weighs the most?
Answer: Her scales.
Riddle: What sea is in space?
Answer: The galax-sea.