A euphemism for "pubic hairs," itself in this context a euphemistic metonymy for "balls". It is used mostly in expressions such as "to have someone by the short hairs," which is to say "to have someone in a very difficult or hopeless situation," equivalent to "to have someone by the balls."
It was a real Catch 22! They had me by the short hairs, and they knew it.
This is easily obtained by chopping off long hair. It looks good on most girls (pixie is harder to pull off) and can be styled in millions of different ways. Its easier to maintain so its a win-win situation. Girls with shorter hair are not lesbians (although I speak only for myself). Emo girls will dye their short hair bright colors, prep girls might curl theirs, and rocker chicks will give theirs a choppy,layered look. Short hair is super versatile.
Although I cut my hair short and layered, I am as straight as they come :).
WARNING: If you plan on flirting, seducing, or hooking up with guys, I suggest long hair because men tend to like that type more (although I have proof that boys like short hair too).
The type of hair that beats long hair.
Also, the tripfag Onayano from /a/ likes it.
Short hair is superior to long hair
A derrogatory (when used by heterosexuals) or playful (when used by homosexuals) term used to describe a lesbian.
Mikey, look, a shorthair just walked in.