411 REFERENCE · Wiktionary
LMBO
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Variant of en LMAO laughing my ass off.
Phrase
phr
en Internet slang en laughing my butt/bollocks/bum/balls off used to indicate great amusement.
en internet laughter slang