This one time, me and my buddy Keith got really into Left 4 Dead 2. Well Keith, he's one of those dopamine junkies, y'know? Like them guys who ride the bulls at the rodeo. He'd probably cut off his nuts if it gave him a thrill. Well anyway, he got reeeeaaalllll addicted to the game. He figured if it always felt good beating a chapter, then he should just keep doing it, you know? Didn't leave his room for three months straight, not even to piss. Neighbors three blocks down were complaining about the smell of unwashed manchild and bottled urine.