Taxi driver

A young man and his date were parked on a back road some distance from town. They were about to have sex when the girl stopped. 

"I really should have mentioned this earlier, but I'm actually a hooker and I charge $20 for sex." The man reluctantly paid her, and they did their thing. 

After a cigarette, the man just sat in the driver's seat looking out the window. "Why aren't we going anywhere?" asked the girl. 

"Well, I should have mentioned this before, but I'm actually a taxi driver, and the fare back to town is $25..."