Or, in the case of 25-year-old politician Chlöe Swarbrick, it's something you might deploy when a heckler is teasing you about your age during your speech on climate change before the New Zealand parliament this week. It is available on platforms such as Twitter and TikTok.
That's when she was heckled about her age, prompting her to reply, "okay boomer" without missing a beat, according to the Parliament's video of the speech.
@_chloeswarbrick DID say "okay boomer" in New Zealand's Parliament!
"OK boomer", Swarbrick shot again.
"I think you can see from the way the memes evolved, it symbolizes Collective frustration, especially among young people, feels that evidence is provided in facts again and again in debates and debates, and is questioned by dogma".
Google searches spiked, presumably from said boomers scuttling to their laptops to work out precisely how offended they should be.
25-year-old Swarbrick clarified her use of the phrase via a text message to Stuff.
Its headline proclaimed 'OK Boomer' Marks the End of Friendly Generational Relations, with reporter Taylor Lorenz saying the anti-boomer sentiment was being fuelled by "rising inequality, unaffordable college tuition, political polarisation exacerbated by the internet, and the climate crisis".
The 2 phrases handle to convey the whole lot I need to say in response to older adults who name local weather activists unreasonable, unrealistic, or naive. "In the year 2050 I will be 56 years old. yet, right now, the average [age] of this 52nd Parliament is 49 years old".
On social media, the Green MP - elected in 2017 - has been hailed as a "queen" for using the term.
New Zealand legislator Christopher Bishop expressed "unwelcome and unawake opinions" in the tweet.
Mr Muller, on the other hand, wondered how long Ms Swarbrick would remain a "millennial force for change".
"My generation and the generations after me do not have that luxury".
"Today, I learned that for a person who laughed at you, it made a simple and ideal response". "Younger individuals have suffered a decade of jibes about how millennials have ruined every little thing and must 'pull our socks up, ' or one thing".