Is that even a thing anymore? If it is, WHY. Left swipe, so hard.
Guyliner's a thing that dropped off after the whole Egyptian king stuff, until musicians like Bowie and Jagger showed up wearing it the early 70's. And I just realized that's going to be super confusing for you, since you might not know those names.
Lets just boil it down to something you'd never wear, but someone goth like Loki would wear it. It's like a silent cry for help.
Ok no. I'm digging this hole deeper since you don't know what goths are, other than they look like Loki.