A person who tries to be on multiple successive trends in a short period time. Listens to imaginary bands no one has ever heard of in order to appear "trendy".
M-"That guy is wearing a flannel shirt, american apparel hoodie, 3d glasses w/o the lenses, rolled cords and vans."
J- "I bet his ipod is full of obscure unknown indie bands, and a little Miley Cyrus for irony."
M- "What a trendslut."