I need to lose weight fast!

I'm about 5'7 ish and I weigh about 130, AND I'm starting to get a STOMACH! :( I need to lose weight fast, because I don't want to get any bigger... but the problem is: I can't go on any diets because my parents will flip! :( I know I can do crunches, but what else? I need some other way also, besides exercising...
I need to lose weight fast!
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