Have mercy! We've heard through the grapevine that a classic boy band will be making a special cameo in Fuller House's second season. No, it's not the Beach Boys — it's New Kids on the Block!

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Based on our intel, the appearance comes after Kimmy (Andrea Barber) and Stephanie (Jodie Sweetin) screw up DJ's (Candace Cameron-Bure) birthday plans and try to recruit her favorite boy band of all time to make it up to her. Here's hoping that Kimmy and Stephanie can prove they've got the "right stuff" and convince the Kids to break out a few iconic dance moves for DJ.

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