Koro's lost his meds

When an older person, typically a politician or a family member (or just a boomer), goes off on a rant-filled tangent about something they don't know enough about, and you and your friends are left to cringe in disbelief. Originated as a reference to New Zealand's far-right deputy prime minister Winston Peters ("koro" is Māori for grandfather and is a common nickname for Peters.

Auē, did you hear Winston comparing Jacinda to the Nazis inanahi? Koro's lost his meds!