Definition of "LGB"

" […] The congressman who had an alleged affair with a Chinese spy forseveral years and inexplicably still sits on the House Intelligence andHomeland Security Committees jumped to Twitter on Christmas Day toattack the Oregon father who delivered the LGB joke during the WhiteHouse holiday call."

2021 December 27, Proud Progressive, “Democrat Rep. Eric Swalwell Blasts Pathetic Dad Who Said Lets Go Brandon to Biden”, in comp.os.linux.advocacy‎ (Usenet)

Got gas the other day and there were two LGB stickers on the gas pump.

2021 December 29, Frank, “Do you suppose anyone told the venal, senile what LGB means?”, in alt.home.repair‎ (Usenet)

Unfortunately for Brown, the reaction was negative. Despite being a rising NASCAR star, he said it became “extremely difficult” to attract sponsors because major corporations saw his unintentional association with the LGB meme to be divisive.

2022 January 5, “NASCAR rejects ‘Let’s Go Brandon’ sponsorship”, in RT‎

That represents a 99.5 percent decline over the last 30 days, leaving asingular LGB coin effectively worthless.

2022 February 13, Technobarbarian, “‘Let’s Go Brandon’ Crypto Coin Turns Into Total Dumpster Fire”, in rec.outdoors.rv-travel‎ (Usenet)