That long, sexy, flowing mane on a girl's (or guy's) head. If your hair is neck length, it cannot truly be calassified as long hair. Long hair is usuallyshoulder blade length or longer.
Long Hair, Extremelypopular back in the 80's and become somewhat of a trend for guys, It has slowly died away and less guys now have long hair due to music these days. Long hair is slowly Becoming more popular on guys.