What is the coolest letter in the alphabet?

How can you tell a raw egg from a hard-boiled egg?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

What always comes into a house through the keyhole?

Different lights make me strange by changing me into different sizes. What am I?

Why are all black people so quick ?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

What has no start, end, or centre?

Why is a river so rich ?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?