A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

What always comes into a house through the keyhole?

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?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Buy me, smell me or deliver me, I do not change.

Who am I?

10+10 and 11+11 can give you the same answer.

Explain how?

By what process could you make a 'Tea-Table' into food?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Which is the rope you never skip with?