The 'OK boomer' meme exploded on TikTok in 2019 as Gen Z's go-to retort for dismissing condescending generational lectures, spreading from a viral TikTok video to news headlines within weeks — including the moment New Zealand MP Chlöe Swarbrick said 'OK boomer' in parliament in November 2019. The phrase's blunt brevity made it a perfect soundbite, and short audio clips of the line now circulate on soundboards and in reaction edits. It endures because it compresses an entire generational debate into two syllables: a universal shortcut for calling out outdated takes.