The phrase took off after a reporter at a NASCAR race in early October mischaracterized a vulgar three-word chant against Biden as a chant in support of driver.
When Republican Rep. Bill Posey of Florida ended an Oct. 21 House floor speech with a fist pump and the phrase Let’s go, Brandon! it may have seemed cryptic and weird to many who were listening. But the phrase was already growing in right-wing circles, and now the seemingly upbeat sentiment actually a stand-in for swearing at Joe Biden is everywhere.