Since the late '70s, the mohawk has been the hairstyle of choice for informing The Man that you will conform only to the standards of people who like the same music as you. The mohawk dates back to and is named for the Native American tribe, while the association with punk rock is a little harder to track: It's because they're both warriors, right? Warriors who don't conform to authority, be it white slavers or your mom asking you to take the garbage out.
"However, I will conform with recommended annual physicals. That's just common sense."
But Originally ...
The Mohawks weren't doing it as a symbol of defiance. They pioneered the hairstyle because they were just plain sick of folks ripping their scalps off their heads. To combat the growing practice of snatching enemy scalps in battle, which was generally performed by making an incision around the hairline and gripping the hair to yank off the scalp, the Mohawks would pluck the hair from the sides of their heads, leaving only a 3- or 4-inch strip at the crown of the head, which would typically be separated into three locks that would then be braided or otherwise decorated. This ensured that there wouldn't be enough hair at the hairline to lift the sides of the scalp away from the incision.
"Plus it concealed my receding hairline, which did wonders for my self-esteem."
To recap: The original mohawk was a purely logical and necessary defensive measure to avoid getting part of your head taken off. But unless there were some particularly savage mods dominating the scene, it was pure vanity for the punks.
"I'll have you know I'm one-sixteenth ... uh, Tonto. So there."
Makeup trends come and go, but classic black eyeliner is here to stay. But we all know that makeup is nothing more than pretty frosting on a sex-cake. What practical purpose could painting your face possibly serve?
But Originally ...
You've probably heard the rumor that Cleopatra invented eyeliner, which of course isn't true, but it did all begin in ancient Egypt. The ancient Egyptians weren't making themselves up just to feel pretty, however, but to reduce the glare of the harsh African sun on their eyes. Ever watched a football game? It's the same reason the players smear grease paint on their cheeks.
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"He didn't even notice ... I spent a lot of time on this, dick."
There's also quite a bit of evidence that the eyeliner served a medicinal purpose. In ye olden days, bacterial eye infections ran rampant, and the eyeliner was helpful for keeping flies and other nasties out of your seeing bits. Furthermore, researchers have recently discovered the addition of lead salts in the eye makeup of ancient Egyptians. It was a puzzling find, because the salts required a painstaking process to create, and lead is generally pretty low on the list of things a reasonable person wants to poke in their eye. Then the researchers did some tests on the salts and found that they were pretty damn effective at killing bacteria.
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So there you go, kids: Got pinkeye? Shove a pencil in there. The ancient Egyptians did it, and those smart dudes built the pyramids.