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1.
having knowledge of anything before the year 2000, mostly seen in people born after 1991, including a vast knowledge and appreciation for modern music/film, etc over good music/film, etc. as if too busy "living life once" to bother to learn anything about the world they're only living in once

the instinct of most people to poop on roses because they don't know what roses are
John: Hey, look! *gestures to a box of ice* It's the ice box!
Blaine: ...
John: You know? The Ice Box? From the Little Giants?
Blaine ...is that like Big Gigantic?
John: Man, you're yoloblivious.
by El Dangeridiculous September 20, 2012