Does anyone know how to make HARD FROSTING? for tonight

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I need to make "HARD FROSTING" for these cute little candy pacifiers I'm making for a baby shower tomorrow. I bought 2 jugs of the hard frosting, and it's not hard enough. They keep falling apart. My friend said she will get me the 411 on making it, but she's still working! Yikes, I have to make this for tomorrow :( I need a quick 411 anyone? S.O.S