Let’s Go Brandon!
For the record:
According to Know Your Meme, it’s a reference to a viral video in which people in the crowd chanted “f*** Joe Biden” while NASCAR racer Brandon Brown was being interviewed by NBC News. The newscaster mistakenly said the crowd was saying, “let’s go Brandon.” As a result, people on Twitter started using “let’s go Brandon” as a euphemism for the phase, “f*** Joe Biden,” Know Your Meme explains.