hairoin 

A drug that makes your cranial-fur longer and thicker.

The real reason that hairoin is illegal is the same as it is for marijuana, ephedra, tryptophan, and some other substances --- it **works** and is **cheap**, and so the greedy scalp-tonic companies that sell all these costly growth-stimulation products that often produce little or no actual results don't want it on the market... it isn't harmful or hazardous; it would just put them out of business!!

hairoin by QuacksO November 29, 2019

Among us hairline 

Only the most elite members of society are seen with these. It is a privilege, but also a massive responsibility to have an among us hairline. The among us hairline is a symbol of leadership and superiority, which is why you have never seen one, for holders of the among us hairline do not show themselves amongst average human beings.

Bro got that among us hairline, damn.

Among us hairline by ChardNard420 September 24, 2021

dropping hairpins 

To give hints that one is gay. Usually in the act of determining whether or not a person is safe to come out to. Also to see if an object of desire is also gay.

When I was talking with Jim, I dropped a couple hairpins, but I don't think he picked up on them.

dropping hairpins by eggie December 2, 2003

Fucked Up Hairline 

When your hairline looks awful or ghastly.
This may even cause others who see it to have a nauseating effect due to witnessing such an atrocity.

Drew aka Drewbacca perfectly exemplifies this definition:
His hairline resembles a staircase, now this wasn't done on purpose hence the "Fucked Up Hairline"

Visual Evidence:
Exhibit A:
http://farm4.static.flickr.com/3485/3183251697_f95103f461.jpg
Exhibit B:
http://farm4.static.flickr.com/3128/3178603647_11c3f91e80.jpg

Fucked Up Hairline by Hypebeast2009 January 10, 2009

Hairline 

The line where your hair starts. For some reason, dumbasses like to make fun of people's hairlines when they don't really matter.

Kid: U HaVe a rachet hairline!
Sane person: Why does it matter?

Hairline by Racist21 June 3, 2015

hairline perm

Usually said to someone with the name xander, that has a perm and a shitty hairline.

"Look at that kids shitty as hairline"
"Ya, he's trying to hide it with his perm"
"Just because of his hairline perm, I'm gonna assume his name is xander

hairline perm by Borgus G peenerton December 31, 2020

hairline 

something that Jojo Siwa doesn't have

I haven't been to urban dictionary since the last time Jojo Siwa had a hairline.

hairline by sisterslang March 21, 2020