3 drunk guys enterd a taxi

3 drunk guys enterd a taxi.
The taxi
Driver knew that they were drunk
So he started the engine & turned
It off again.
Then said, "we have
Reached your destination".
The 1st
Guy gave him money
&
The 2nd
Guy said "thank you".
The 3rd guy
Slapped the driver.
The driver was
Shocked thinking the 3rd drunk
Knew what he did.
But then he
Asked "what was that for?".
The
3rd guy replied,-
"control your speed next time, you
Nearly killed us!"