Riddle: What house can fly?
Answer: Housefly.
Riddle: What do you call pigs that write letters to each other?
Answer: Pen Pals.
Riddle: What did the comedian say when he took off his clothes?
Answer: Haven't you ever seen a comic strip.
Riddle: It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shopping. What is it?
Answer: A car.
Riddle: What number do you get when you multiply all of the numbers on a telephone's number pad?
Answer: Zero. Anything multiplied by zero will equal zero.
Riddle: What was never scared but became petrified, can't make a bird but can make a bat, can't live in a house but would die to have one. What is it?
Answer: A tree.
Riddle: I am a king who measures things quite well. What am I?
Answer: A ruler.
Riddle: Three times what number is no larger than two times the same number?
Answer: 0
Riddle: What can be seen in the middle of March and April that cannot be seen at the beginning or end of either month?
Answer: The letter R. This wordplay ties to April Fools' Day by focusing on the month of April, encouraging clever thinking typical of pranks.
Riddle: You are watching a video of a pencil being sharpened in a sharpener. The pencil is getting longer not shorter. How is this possible?
Answer: The video was backwards.