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From Backstreet Boy to Fatstreet Loin!

Nick Carter is apparently desperate to get back into shape before he begins promoting his cable network reality show ‘The Carters.’ The former heartthrob was recently spotted busting his gut at the 24 Hour Fitness in West Hollywood (which is perhaps the gayest gym in the world.)

Flabby Nick pumped some iron and got his cardio on while onlookers chuckled quietly. At one point, as a result of feeling the glare of so many strangers on him, Nick went on an expletive-ridden tirade on an unsuspecting fellow gym-goer/fan who approached him.