Hipster Garbage
Something that someone subjects themselves to (such as music or literature) with the sole purpose being to look smarter or fit in.
Hipster: "I'm gonna go listen to some Neutral Milk Hotel. You wanna come?"
Not Hipster: "Nah, man. That's some serious Hipster Garbage."
Not Hipster: "Nah, man. That's some serious Hipster Garbage."