It lets you know that your friend Josh just posted a snack tip on the Nutella page, or that your cousin Cathy just went shopping at Target.

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If your schedule is unpredictable, that may mean carrying a just-in-case snack in your purse or briefcase to stave off hunger.

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The original meaning of lunch or "nuncheon" as a small, quick snack between proper meals is just as apt now as it ever was.

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