Tornado Alley (PROG)

[blackhawks]

used as an acceptable international greeting of a person whos name is unknown to you or one of which you have forgotten

Or, more commonly, used as a patronizing, condescending remark toward someone you disagree with, in lieu of marshalling a persuasive counterargument.

Shit, now that I've written it, it sounds good enough, sounds accurate enough, for me to send it into the urban dictionary.