u/Rothentoo

It gets toad away.

This guy sticks his head into a barbershop and asks, "How long before I can get a haircut?"

The barber looks around the shop and says, "About two hours."

The guy leaves.

A few days later the same guy sticks his head in the door and asks, "How long before I can get a haircut?">

The barber looks around at his shop full of customers and says, "About two hours."

The guy leaves.

A week later the same guy sticks his head in the shop and asks, "How long before I can get a haircut?"

The barber looks around the shop and says, "About an hour and a half."

The guy leaves.

The barber looks over at a friend in the shop and says, "Hey, Bill, follow that guy and see where he goes."

In a little while, Bill comes back into the shop laughing hysterically.

The barber asks, "Bill, where did that guy go when he left here?"

Bill looks at him and says, "To your house."

On the way there, he tells his driver that looks a bit like him:

 

"I'm sick of all these conferences. I always say the same things over and over!"

The driver agrees: "You're right. As your driver, I attended all of them, and even though I don't know anything about science, I could give the conference in your place."

 

"That's a great idea!" says Einstein. "Let's switch places then!"

 

So they switch clothes and as soon as they arrive, the driver dressed as Einstein goes on stage and starts giving the usual speech, while the real Einstein, dressed as the car driver, attends it.

 

But in the crowd, there is one scientist who wants to impress everyone and thinks of a very difficult question to ask Einstein, hoping he won't be able to respond. So this guy stands up and interrupts the conference by posing his very difficult question. The whole room goes silent, holding their breath, waiting for the response.

 

The driver looks at him, dead in the eye, and says :

 "Sir, your question is so easy to answer that I'm going to let my driver reply to it for me."