OK Boomer! I found the retort "Ok, Boomer!" to be an amazing critique, summation and catch phrase for the millennial and post-millennial generations. Keep in mind that a "Boomer" is not a age range, it is a personal outlook that summarily dismisses the whole generation of 'young people' strictly based on their age. My generation would have called it "ageism" - this is far more snappy. Kudos!