When there's so very many lights from a city that it obscures the night sky, making star~viewing almost non~existant.
Gawd, I Hate Light Pollution because it interferes so badly with my viewing of the stars & moon at night! There's so much better viewing in a small city or the countryside!
Songs on your iTunes that you don't really like. Maybe you liked them once and then got sick of them. Or maybe you downloaded them for free off of iTunes Discovery Downloads, thinking that you could learn to enjoy them, but never did.
Me: Hey, could you burn me some of your Three Day's Grace songs?
Hannah: Yeah, sure. Hey do you want some MIKA too?
Me: Nah, I'd never listen too it. It would just be more iTunes pollution.