The definition of old people who try to work with the technology from now-a-days and fail. Or just people who dont pay attention to the trend. Dont use it if someone just likes playing TF2, Unreal Tournament 2003 etc.
Short for baby boomer which was the name of babies born between 1946 and 1964, so it is the correct terminology that the government uses. Therefore is not a insult
Dave ‘Hey look there it’s a boomer, how sad I hate them’