The phrase comes from an October 2021 NASCAR interview at Talladega Superspeedway, when driver Brandon Brown had just won his first Xfinity Series race. As the crowd chanted a profane slogan about President Joe Biden, the NBC reporter interviewing him described it on air as Let's Go Brandon. The clip spread quickly online, and the phrase became a coded, broadcast safe stand in that was printed on signs, shirts and flags. It remains widely quoted because the polite wording lets people reference the chant without saying it directly.