A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

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?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Give it food and it will live; give it water and it will die.

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.