MLGB = My Life's Getting Better (妈了个屄)

MLGB, a China internet phenomenon.

MLGB is what you type in Chinese pinyin to input 妈了个屄, a expletive meaning “o mother pussy” 〔see Chinese Input Methods〕 Sometimes to avoid censorship, you just type the english MLGB instead.

but to English speakers, they know not what it means. The good explanation in English, is MLGB = My Life's Getting Better. And it became a brandname.