A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

When does a USA Potato change its nationality?

What has no start, end, or centre?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

How can a man go eight days without sleep?

I can be cracked, made, told, and played. What am I?

Which alphabet letter is a question?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Which flower has two lips?