The taxi driver knew that they were drunk so he started the engine and after a couple of minutes, simply turned it off again.
Taxi Driver, “We have reached your destination!”
The first guy gave him some money and the second guy thanked him as they clambered out of the car.
The third guy slapped the taxi driver across the face. The taxi driver was shocked, thinking the third guy must have been sober after all.
The Taxi Driver said, “What was that for?”
And the third guy replied, “Control your speed next time, you nearly killed us!!!”