The Dentist And The Blind Man

The dentist asked the blind man
What do you do?
I'm a writer
said the blind man
But didn't you serve me at McDonalds yesterday?
asked the dentist
The writer said
I don't think so
I'm pretty sure it was you
said the dentist
I'm pretty sure dentists don't eat at McDonalds
said the writer
And anyway I have Fridays off
Then he took out a copy of his book
and slapped the dentist with it
The braille left and imprint on the dentist's face
It said
Don't be a dick to blind people.