Jelly Roll‘s got a bone to pick with his wife Bunnie Xo after her latest Amazon purchase. In a video she posted to TikTok, Bunnie demonstrates her idea for a “hillbilly cold plunge,” aka a DIY plunge tub. Cold plunges are known for their health and mood-boosting benefits — Dierks Bentley is a particularly vocal fan from the country community — but the tubs are expensive. Enter an Amazon kiddie pool, a purchase that Jelly wasn’t too thrilled to see his wife unbox. “My husband is done with me,” Bunnie jokes as she lugs the pool through the house. “Mama, did you get another kiddie pool?” he says …