A guy and a girl met at a bar. They started getting along really well they decide to go to the girl's place for a drink.
A few drinks later, the guy took off his shirt and washed his hands.
He then took off his socks and washed his hands.
The girl looked at him and says: 'You must be a dentist!'
Flabbergasted, the guy responded 'Yes, that's amazing how did you figure that out ?'
The girl said: 'Easy .... you keep washing your hands'
One thing led to another, they migrated to the bed and things became more passionate. After they were done, the girl said: 'You must be a GREAT dentist!'
The guy was very very surprised, and said 'Yes, I sure am a great dentist ... How did you figure that out??'
The girl said: 'Easy ... I didn't feel a thing'