News Why are Gen Z and millennials calling out boomers on TikTok? ‘OK, boomer,’ explained November 4, 2019 Joshua Bote, USA TODAY Comments Off on Why are Gen Z and millennials calling out boomers on TikTok? ‘OK, boomer,’ explained The "OK, boomer" phenomenon calls out baby boomers who say younger generations have "Peter Pan syndrome." But why are they so peeved at boomers?