LMFAO is an American electronic dance music duo consisting of Redfoo and SkyBlu. The duo are both descendants of Motown Records founder Berry Gordy, Jr.. RedFoo and SkyBlu both grew up in the affluent Los Angeles neighborhood Pacific Palisades, where they formed the group LMFAO in 2006. On September 21, 2012, the duo announced that they are on hiatus.
Definition #2 for "LMFAO"
a term meaning laughing my fucking ass off and is very usually used my games