What's the flick at the end of the eye thing?

Women I don't understand that flick tick at the end of your eye when doing your makeup. What's it supposed to be?

I get that it's some kind of makeup style, just curious why you put it there.

I not a fan of makeup on women in general but I understand it but don't understand this
Whats the flick at the end of the eye thing?
What's the flick at the end of the eye thing?
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