lmfao phrase1 •(Internet, vulgar) Alternative letter-case form of LMFAO; may impart a lighter mood to the conversation.Q: What is your attitude towards cannibals? A: like when you jump in the pool? hhahahhaa. umm make a huge splah and ya win the competition lmfao. — 2013
LMFAO exclamation1 •(Internet, vulgar) Initialism of laughing my fucking ass (arse) off More emphatic form of LMAO.
