Hair shark 

small lock or locks of hair sticking up on the top of your head when it's in a ponytail - like shark fins sticking up out the water

I thought I had pulled my hair back into a neat ponytail, but found out when I looked in the mirror that I had like 5 hair sharks.

Hair shark by AcoolgirlcalledB January 4, 2011

Hair shark 

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!”

Hair shark by Greanbeen January 18, 2020

Split Face Hair Shark 

Vagina, pussy, twat, Etc...

Close relative of the Split Face Bald Shark!

I was walking drunk on the beach and almost stepped on a Split Face Hair Shark!

Split Face Hair Shark by RedWingsWin March 26, 2009

Shark Hair 

Hair that stands up like a shark fin, usually in the morning after going to bed with wet hair. Similar to Bed Head

Hey Dad, you have got great shark hair this morning.

Shark Hair by papa_eos August 4, 2012