lmfbst Share definition Flag An alternative to “lol” (“lmao” etc.) and used before “😂”. It stands for Lick My Fucking Ball Sack Twice. Brody - Why did the cow need $20 Nick - Why Brody - So he could take his girlfriend to the Mooovies 😂 Nick - lmfbst 😂 lmfbst by Vrody March 26, 2019 Get the lmfbst mug.