Every day, a male employee walks up very close to a female co-worker at the coffee machine. he stops, inhales quite deeply as says that her hair smells nice.
After a week of this, the woman can't stand it anymore. She takes her issue to the supervisor in H.R. and asks to file a sexual harassment grievance against the bloke.
The supervisor is puzzled and asks "What's threatening about a bloke saying your hair smells nice?