A person who hasn't been accepted as an adult by anyone with half a brain. These people are the product of our fuck-up, filth-ridden modern day world. In most cases they come from a dysfunctional up-bringing or just simply have no clue on how to be themselves. They are usually quite out of touch with reality.
You can spot these clowns a mile away. The guys, usually wearing what would appear to be a pair of girls jeans, you just want to plow your fist into their scrawny, perverted-facial-hair covered face. The girls(some being very attractive) usually hide their beauty under a hodge-podge, haggard mess of asinine, mix-matched clothing.
Anyone reading this who doesn't fit these descriptions, I know you know EXACTLY what and who I'm talking about.
Mostly teens and 20s, but sadly, many people are like this in their 30s. Anyone like this in their 40s, see definition: PATHETIC.
A Hipster is a person who is trying hard to be something or someone, or a person who is trying hard to not be anything or anyone at all, and has no idea how to just be as they are.