Of all the teen-mag advice I read back in the day, one bit stands out as an unwavering truth: there's no magic pill to change the size of your bustline. But don't tell that to the makers of these items. These odd snacks, creams, and drinks promise to turn tangerines to cantaloupes, molehills into mountains, cupcakes into, uh, larger cakes. Do they work? I wouldn't hold my breast. Er, breath. But for a laugh, yes, they certainly work.