Fad-Whore
A person who chases every new thing like it's the last donut at the bakery. They have no sense of self. They just copy others and hope they look cool.
I bought that new 'viral' snack. It tastes like cardboard.
I started saying 'bruh' because I heard it on a video. Now I talk like a kid.
I got a neon haircut because it was 'on trend.' It looks like a traffic light.