Rick: Dude, I just came back from the hospital. I found out that I have terminal cancer.
Douchebag: LMDO. That sucks.
Rick:
Douchebag: Seriously, check out my dong.
Person 1: "Yo! Did you hear about that personthat's so concerned about being stalked that they only put their initials on their social media page? I found their LinkedIn profile!"
Person 2: "LMFBOAT! What a scrub!"
Lmbo is a more appropriate version of Lmao for people who want to kiss their mother with a clean mouth. It stands for "Laughing my butt off", "Laughing my bones off", "Last mountain bird observatory", "Little mister Bobby Opal", or "Lying my behind off".