One in five men gets haircut anxiety, according to a new poll. The survey of 2,000 U.S. men found 21% feel “nervous” asking their stylist or barber for a new hairstyle. And another 23% have been afraid to ask for specific haircuts in the past, even when they really wanted it. Seventeen percent have tried to get around it by asking their stylist for a more “watered down” version of what they really want. A…