blonde getting a haircut

A blond was rollerblading with her headphones on. she stopped in the hair salon and asked for a hair cut. she instructed that the hair stylist could not take off the headphones.

the stylist replied "no" so the blond left. she went to a different hair salon and said the same thing. the stylist replied "ok".

after a while, the blond fell asleep in the chair. the stylist took off the headphones and the blonde died on the spot. confused at what happened, the stylist put on the headphones. they were saying, "breath in, breath out"