What is "lad culture"

n. (context British English) A subculture, commonly associated with Brit-pop in the 1990s.

Lad culture (also laddish culture and laddism) is a British subculture initially associated with Britpop music of the 1990s. "The image of the 'lad' or 'new lad' arose in the early 1990s as a generally middle-class figure espousing attitudes conventionally (though not necessarily correctly) attributed to the working classes".