Dumb Blond Joke

A dumb blond walked into her Dentist office with headphones on and sat down in the chair to get some work done.  Her Dentist came into the room and this is how their conversation went:  "Your going to have to remove those headphones I can't work with them on your head!"  "No, I can't..... I must leave them on"  "I am sorry but, there is no way I can work around them, take them off!"  "No, I can't, please let me keep them on."  "I have to keep them on!!"  "PLEASE!!" "OK, OK, I'll try to work around them."  Her Dentist proceeded to try to work around the headphones.   But, it just got to hard to do.  So, he quickly took them off.  All of a sudden the dumb blond closed her eyes, slump down in her chair and fell on the floor.  Her Dentist said in a panic:  "Oh my god what have I done!!"  As he picked up the headphones and put them to his ear.   He heard these words.......Breath In, Breath Out, Breath In, Breath Out, Breath In, Breath Out.