If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

I look at you, you look at me I raise my right, you raise your left. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?