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Listen up, party poopers: Fiber One is celebrating 10 years of chewy snacks with a limited edition birthday cake bar [3], and things are getting colorful. The cake bars are only 90 calories each and a bright spin on the delicious flavors we've seen in the past. If funfetti makes your eyes light up [4] like it does ours, these health-conscious cake bars will do the same, each with five grams of fiber. But we're warning you: as tempting as it is, please don't eat the entire box, because speaking from personal experience, your stomach will hate you.
The bars were spotted by junk-food aficionado JunkBanter on Instagram [5], who snagged the birthday treats in the cereal aisle [6] at Walmart earlier this week. With comments ranging from "so f*cking good" to "currently convincing myself this bar is worth violent stomach cramps," we recommend finding a nearby store where the bars are available [7] and purchasing ASAP.