Someone who scouts for attractive people with bad haircuts so when the hair grows back and they are attractive again, they will already be there.
Girl A: “Did you see Marks new haircut? Its so bad! He was so much hotter before!”
Girl B: “Apparently Genna is trying to swoop!”
Girl A: “Of course she is. Shes a hair shark. Genius move actually!”
When one person, usually with short hair or no hair, drapes the hair of another person, who has long hair, over their own head in a kind of Bobby Charlton comb-over by proxy. This can give the follically challenged the illusion of hirsuteness, even if it is only temporary.
Hey Fred, Tinas coming over, quick lets hair share so she doesn't notice I'm as bald as a coot.
a person who tells their whole life stories in the most inappropiate places, ie the bank, post office or the line at the DMV. Can make ones hair stand on end.
Shanahair is a very regional definition, used espescially for weird info.
That girl just toldthe bank teller that she had a wart removed from her ass, what a sharhairer.