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Haijin is a Japanese word that means a gamer so lazy and weak they stay in their pajamas all day, never leaving their room unless it's to buy more snacks and energy drinks.
My cousin is a haijin. He hasn't left his room since 2020.
That guy is a haijin. He plays video games instead of going to work.
I'm a haijin. I eat cereal for dinner and it's fine.