What is A-line?
1.
A term used to describe a teenage male who wears his hat/beanie/hood near the end of his head.
Dude, T.I is so A-line, his beanie is practically hovering.
See
2.
When someone that is of the more popular statis is wearing his/her hat or other head dressing at the edge of their head to the point where it looks like if the wind blows from any direction it would fall off thus making them look too cool to associate with. Also seen walking with both hands in jean pockets with head tilted somewhat down and hoodie jacket zipped about half way up.
Person 1: Goshhh, that Sean Compton guy is so fresh and a-line.
Person 2: It's supposed to be windy today, I really hope that his hat doesn't fall off!
Person 1: I know, you are so right Kelly. Then who could we possibly look up to as our a-line hero!?
See