What is the difference between making love to a 
Flight attendant, a nurse and a schoolteacher? 

The schoolteacher will tell you, "We are going 
to do this until we get it right.” 

The nurse will tell you, "Don’t worry, this 
won't hurt a bit.” 

The flight attendant will tell you, "Place this
securely over your nose and mouth and continue 
to breath normally."