What always comes into a house through the keyhole?

The more it dries, the wetter it becomes. Can you tell what it is?

Can you place six X (crosses) in below board without making three in a row in any way ?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Can it be possible to build a house that has all its four walls facing towards the South?

Why Aeroplane windows are round?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

Why is 6 afraid of 7?