Riddle: How many seconds are there in one year?
Answer: 12.  Every month has a 2nd.
Riddle: You have three stoves: a gas stove, a wood stove, and a coal stove, but only one match. Which should you light first?
Answer: The match!
Riddle: You walk up to a mountain that has two paths. One leads to the other side of the mountain, and the other will get you lost forever. Two twins know the path that leads to the other side. You can ask them only one question. Except! One lies and one tells the truth, and you don't know which is which. So, What do you ask?
Answer: You ask one twin,  "Are you twins?". If he says "Yes", he is telling the truth.  Therefore, you ask the other twin which way to go and go the opposite way because he is lying. If he says "No", he is the liar and you ask the other twin which way to go because he is telling the truth.
Classic Riddles
Riddle: What 7 letter word is spelled the same way backwards and forwards?
Answer: Racecar.
Riddle: I am full of holes but I can still hold water. What am I?
Answer: A sponge!
Classic Riddles
Riddle: I'm tall when I'm young and I'm short when I'm old. What am I?
Answer: A candle or a pencil.
Riddle: What 5 letter word typed in all capital letters can be read the same upside down?
Answer: SWIMS.
Classic Riddles
Riddle: If a rooster laid a brown egg and a white egg, what kind of chicks would hatch?
Answer: Roosters don't lay eggs.
Riddle: When can you add two to eleven and get one as the correct answer?
Answer: When you add two hours to eleven o'clock, you get one o'clock.
Riddle: A pregnant lady named her children: Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child? Jessica, Katie, Abby, or Tilly?
Answer: Tilly. She seems to follow the scale Do, Re, Me, Fa, So, La, and then Ti.
Riddle: Romeo and Juliet are found dead on the floor in a bedroom. When they were discovered, there were pieces of glass and some water on the floor. The only furniture in the room is a shelf and a bed. The house is in a remote location, away from everything except for the nearby railroad track. What caused the death of Romeo and Juliet?
Answer: Romeo and Juliet are fish. The rumble of the train knocked the tank off the shelf, it broke and Romeo and Juliet did not survive.
Riddle: I'm not clothes but I cover your body; The more I'm used, the thinner I grow. What am I?
Answer: Bar of soap.
Riddle: What is it that given one, you'll have either two or none?
Answer: A choice.
Riddle: A horse was tied to a rope 5 meters long and the horse's food was 15 meters away from the horse. How did the horse reach the food?
Answer: The rope wasn't tied to anything so he could reach the food.
Riddle: What travels around the world but stays in one spot?
Answer: A stamp.
Riddle: Five apples are in a basket. How do you divide them among five girls so that each girl gets an apple, but one apple remains in the basket?
Answer: Give the fifth girl her apple in the basket.
Riddle: Railroad Crossing, look out for the cars. Can you spell that, without any R's?
Answer: That.
Riddle: I'm white, and used for cutting and grinding. When I'm damaged, humans usually remove me or fill me. For most animals I am a useful tool. What am I?
Answer: A tooth!
Riddle: You use a knife to slice my head and weep beside me when I am dead. What am I?
Answer: An onion.
Riddle: If you drop me, I'm sure to crack. Give me a smile, and I'll always smile back. What am I?
Answer: A mirror.