Blond and Brunette

A blond and a brunette are on an elevator, suddenly a good looking handsom man gets on. So then the brunette turns to the blond and says, "Wow", he is so good looking, but that dandruff on him is a real turn off". "I think we should give him some Head and Shoulders!" said the brunette. All of a sudden the blond turned to the brunette with a confused look and said, "Ok, but how do you give shoulders?"