Coined in the comedy Monty Python's Life of Brian, wherein the titular character writes Romanes Eunt Domus (people called romanes they go the house) on the city's wall for the Centurions to see, only for them to correct his grammar.
May be used by political protestors, as it implies the government is stepping into the people's lives, and should stay away.
Countryman: Romani Ite Domum!
Soldier: What's that even supposed to mean?
Countryman: I dunno, I saw it in a movie once.