Someone who knows it's all going to shit, but still thinks it will turn out OK
"It" most commonly refers to the environment, or humanity, but could be other things as well.
Guy 1: "The envrionment is being degraded at an unparalled rate, we're literally destroying ourselves... but, it'll probably turn out OK. If we fail, the planet will likely heal itself in our abscence."
The long-awaited event promoted by the legendary Knights of the Apocalypse. Originally named Apocalypse, the Apocalooza is a more extravagant version of the original concept, which will now feature not only monumental floods, out-of-this-world fire storms, and epic plagues, but also the fantastic financial collapse of civilization and the spectacular demise of moral principles on every level of society. The date of the event hasn't been announced yet but it shouldn't be too far away now.
"Let's have giant pizza."
"What? I thought you were on a diet!"
"Tomorrow is the Apocalooza."
"I'll have a doubleshake then."
"What do you wanna be when you grow up, Billy?"
"It doesn't matter. Tomorrow is the Apocalooza."
"Let's vandalize the school then."
There is war, famine, economic collapse, homes being foreclosed, but all this strife makes us stronger and it will all work out in the end, but I'm an apocaloptimist
Person A: OMG that huge fucking meteor's gonna pwn the earth!
Person B: Ya dude gonna be total apocalownage.
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Person A: So how'd you do on that exam?
Person B: I raped it man, was epic apocalownage!