If two's company, and three's a crowd, then whats four and five ?

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?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

What goes up but never comes down?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

What Time Should the last watch show in the below figure?

Move three sticks of the spiral below to form a square.

Solve this riddle by finding the odd one out from the rest.

What has 13 hearts but no other organs?

What does this simple rebus mean?