or la-de-da, lah-di-dah
Origin of la-di-da
Examples from the Web for la-di-da
But la-di-da people also buy that water in Fiji and have it shipped thousands of miles, so maybe they would have been fine.
Mr. La-di-da, the prisoner, not in the dock, but seated in a chair before it.The Tables Turned|William Morris
You're enough to make a fellow drunk with your la-di-da behavior.Carnival|Compton Mackenzie