In context to the song king of the thing by O.A.R.
There is a kink...and this thing that the song speaks of is the throne that the king sits on in the third line of the song. Some may say that you can't be king of a throne. But I say why not. Some beleive this king is the king of India because O.A.R. has a t-shirt that depicts this king as being Indian...hense the turban. And he is sitting on a throne. So what i say it this thing is an Indian throne
Indian: What is the king in the song King of the thing by OAR the king of? What thing?
Indian: The throne DUH
A fun idiom that means "a broadly accurate guide or principle, based on practice rather than theory." It is exactly like "Rule of Thumb" but without the added joke that it's meaning stems from domestic abuse.
What a grade-school student tells someone as a reason for his unwillingness to perform a requested action; it means dat while he personally would not mind doing it, he is afraid dat "da big man in dat dreaded upstairs office" would disapprove, and thus he would give him major grief if he found out.
One sixth-grade boy conversing with another on da playground: Sorry, Dude --- I can't slip you a textbook in class to help you get a better grade on your test; it's the principal of the thing."