I try this kind of language at retail stores all the store. Not to speak to the manager or do anything aggressive, but to ask for basic thing, like saying to the butcher, "Your finest pork chop, good sir!" (while pointing to the pork chop cut I want). Confused look (sigh). "I want an Center Loin pork chop please." The average retail employee just doesn't have a love of poetics or much of a working vocabulary.
Really? 'Cause I work retail, and I'd LOVE people to talk like that when asking me for stuff! Sure beats "hey you," or just the word "glue" or "gloves" or "hammer" or something.
My personal favorite along these lines is when someone in the store asks of they can help me. "Do you have a PhD in Psychotherapy?"