OK zoomer!

A zoomer is a member of Generation Z, born in the early 2000s and characterised as having great facility with digital technology and great social skills.  Zoomers are also sometimes mocked for being obsessed with their digital devices and their endless consumerism.  The word zoomer is modelled on boomer but there are various reinterpretations being applied to it. One is that zoomers have a short attention span. They zoom.

 The mocking expression OK boomer!  has, unsurprisingly, produced the similarly sarcastic OK zoomer!  This is not just used by the boomers as their riposte to the zoomers. The millennials also like to have a crack at the zoomers, apparently.