BMW
n. countablen. a person who complains or talks too much about their problems. It is a funny, informal way to describe someone who is always unhappy.
n. an individual who habitually complains or expresses dissatisfaction. An informal acronym for 'Bitch, Moan, and Whine', typically used in colloquial or workplace registers to describe a person perceived as excessively negative.
Don't be such a BMW and just finish the work.
The office manager is a total BMW who spends more time complaining about the coffee than actually doing her job.
While his technical skills were undeniable, his reputation as a BMW made him a difficult fit for the collaborative and high-pressure environment of the startup.
Borrowed from German BMW.
Used as a derogatory or humorous label for a person; usually preceded by the indefinite article 'a'.