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A person who laughs at the gym and everyone who goes there. They think they're better because they're too lazy to lift.
I saw the gainers hater at the gym. He was eating a bag of chips and making fun of people who were actually working out.
My cousin is a gainer hater. He says he's too cool to do push-ups.
The gainer hater called me a 'weakling' because I like protein powder.