Habernackle
A greeting that only the most clueless people use. It’s like shouting 'Hello' in a whisper.
'Habernackle,' said the man on the bus, and I just wanted to scream.
I said 'Habernackle' to my teacher, and now I have to write an essay.
My brother said 'Habernackle' to my dog, and the dog ignored him.