大懶堂

L.M.F. (大懶堂) also known as Lazy Mutha Fucka or Lazy Muthafucka or "Lazy Muthafuckin bitches", is a Cantonese hip-hop group in Hong Kong. The group, signed by Warner Music, was founded in 1993 and disbanded in 2003. The from the disbanded LMF are now pursuing their solo careers.

Their songs are very controversial because of their influence on Hong Kong youth and hip-hop culture and attitude.

L.M.F. offers Hong Kong an alternative to Cantopop. L.M.F. remains one of the few, if not the only, well-known localized rap groups. L.M.F highlights the economic oppression and social alienation faced by the lower class of Hong Kong, all coming from Hong Kong's overcrowded public housing estates. In essence, L.M.F. uses Bruce Lee as a role model of a generation of Chinese youth.

Their last and final album, finalazy, was released just before their breakup.