The 'U R Not a Vibe Bro' meme is a popular internet catchphrase used to dismiss individuals whose energy, behavior, or attitude doesn't align with the current mood or 'vibe' of a group. Often accompanied by images of judgmental characters or deadpan expressions, the meme serves as a modern-day 'vibe check' failure notification. It gained significant traction across social media platforms like TikTok and Twitter, where users employ it to lightheartedly gatekeep their social circles from negativity or awkwardness. The template is highly versatile, making it a staple for everything from workplace critiques to gaming group dynamics where one person is ruining the collective flow.