Riddle: You can crack me; You can make me; You can tell me; You can play me. What am I?
Answer: A joke.
Riddle: One way I'm loose, one way I'm tight; Out with left, in with right. What am I?
Answer: Screw/Screwdriver.
Riddle: My full powers come when my makers are dead; I await a heavy hat to put on my head. What am I?
Answer: Prince.
Riddle: I grow in the dark and shine in the light; The paler I am, the more I am liked; My maker never gets paid, but never goes on strike. What am I?
Answer: A pearl.
Riddle: A single word which is versatile, it can be a letter, unknown to the problem, a variable, a target, a love, an intercept, and a type of chromosome. What am I?
Answer: X.
Riddle: I went to city OZ on the way I saw four women, with four bags, who had four kittens. Each woman had two children with her. How many people went to the city OZ? (count correctly)
Answer: One because I went to city OZ on the way I saw...
Riddle: What can you catch but not throw?
Answer: A cold!
Riddle: What goes up and down a hill but never moves?
Answer: A path.
Riddle: What is invisible and makes people suffer from symptoms like sweating and nausea, yet people can't survive without it?
Answer: Love.
Riddle: I can only live were there is light, But I die if the light shines on me. What am I?
Answer: A shadow.