As You Know Pinocchio's Nose Grows When He Lies
Riddle: As you know, Pinocchio's nose grows when he lies. So, If he said, "My nose is about to grow." Would he be lying or not?
Answer: Neither work. True: He's telling the truth so his nose wouldn't grow, Causing a lie. Lie: If he's lying, His nose WILL grow so it would be truth.
Source: https://riddles.com/8524
