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After "The Situation" mocked Snooki's "rolls" on The Jersey Shore last week, she tearfully announced she once battled an eating disorder.

How bad was it?

"In high school, I really wouldn't eat," Nicole "Snooki" Polizzi, 21, reveals in an episode of The Insider to air Tuesday. "I would only have lunch, and I would only have salads.

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"It got so crazy that I would only eat a cracker or a cucumber a day and I would feel full," continues the MTV reality star (the show's finale airs Thursday).

Snooki says she "would go into the nurses office every day and I would weigh myself. When she [the school nurse] realized that I hit 80 pounds, she was like, 'This isn't good.'"

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The nurse notified her parents.

"My parents told me, 'You need to eat, this is very dangerous,'" says Snooki, who is 4-foot-9. "So I gained my weight back to like 98, where I always was."

On Friday, Mike "The Situation" Sorrentino told that he felt bad for mocking his co-star while they were dining together in Atlantic City.

"I regret saying it because I have a sister and a mother, but at the same time, everything happened so quickly and that is what happened," he told Us at the GBK Gift Lounge in West Hollywood.