Anything or anyone lowbrow is unsophisticated and uncultivated. Videos that become wildly popular on the internet tend to be lowbrow.
Something that is lowbrow doesn’t provide much intellectual stimulation, and it may be in poor taste. Comedies that rely heavily on insults, physical gags, and jokes about bodily functions can usually be described as lowbrow. Forms of entertainment such as operas and Shakespearean plays are typically regarded as highbrow — the opposite of lowbrow. Surprisingly, they can have their fair share of lowbrow humor as well.