The phrase comes from Brazilian Portuguese, where panetone is a traditional Christmas bread sold everywhere during the holiday season. A price of seven reais stands out because it is unusually low, which helped the shouted line circulate as a standalone meme audio on soundboards and in short video edits. No specific seller, show or original recording is widely confirmed, so the clip is mainly known through its reuse online. Creators keep using it as shorthand for an absurd bargain, a desperate sale or a product priced suspiciously below expectations.