Pulling a Fast One

John and his date were parked on a secluded dirt road 
and started to make out hot and heavy. 
His date stopped and said, 
"I really should have told you this earlier, 
but I'm actually a hooker and I charge $20 for sex." 

John pulled a twenty out of his billfold 
and proceeded to have his way with her. 
After a cigarette, John just sat in the driver's seat 
starring out the window. 

The woman asked him, "Why aren't we going anywhere?" 
John replied, "Well, I really should have 
told you THIS earlier." "I am actually a taxi cab driver,
and the fare back to town is $25."