Riddle: You are alone in a room. But there is also a thief in the room. How?
Answer: You are the thief. Sorry to break it to you!
Riddle: There are eight lemons in a bowl. You take three of them. How many lemons do you have now?
Answer: You have three lemons–the ones you took.
Riddle: Which statement is true? 1) One statement here is false. 2) Two statements here are false. 3) Three statements here are false.
Answer: Statement 2 is true.
Riddle: The giraffe is taller than the lion but shorter than the palm tree. Which animal is the tallest?
Answer: The giraffe is the tallest animal. A palm tree is not an animal, duh!
Riddle: Which statement is correct? 1) 119 and 19 is 128. 2) 119 and 19 are 128.
Answer: Neither statement is true; 119 and 19 are 138, not 128.
Riddle: Oliver and Brittany are siblings. They were born in the winter and summer. If Brittany was not born in the winter, then who was born in the summer?
Answer: If Brittany was not born in the winter, then she was born in the summer. Therefore, it's Brittany.
Riddle: Harold is Andrew's father. Who was born later?
Answer: Andrew, because he is Harold's son.
Riddle: Ally and Gwen were told to do house chores on a rainy day. Ally chose to hang the laundry outside to dry, while Gwen vacuum-cleaned the bedrooms. Who is more stupid?
Answer: Ally is more stupid because it was raining all day, and there wouldn't be any need to hang laundry outside.
Riddle: Charles called his wife to tell him that he would be home by 7:00. But when he arrived home three minutes past 7:00, his wife was furious! Why was she so mad?
Answer: Charles' wife expected him to arrive by 7:00PM, but he arrived at 7:03AM the next morning. Oh, the classic "I forgot about ante meridiem and post meridiem".
Riddle: What is half of two plus two?
Answer: The ambiguity of this riddle means that the answer could be either two or three. But the real answer is three because you have to follow the order of operations (half of two is one, and one plus two is three).