It's an old pickup method. It was abandoned by Pickup artists a long time ago after they realized what actually made it work. Basically it was a way to get attention easily and when girls would comment on your appearence you'd completely OWN what you were doing. It was used to make shit-test-passing easy.
Hopefully, people care enough about what others see to give some attention to how they look. And the level of attention may differ with different people. Nothing to look down on unless they look ridiculous instead of impressive.
It works, so I understand lol. Growing up, when my best friend started wearing skinny jeans I understood it was because a lot of girls were into that look and he wanted girls. So even tho, straightening your hair and wearing skinny jeans is kind of gay for a guy to do. At the time it increased his chances of getting laid. Lol.
Now, if it didn't help him to get girls I would have talked to him about it XD. Like what the fuck hahaha