Ready for this one? I’m gonna throw a fast one at you, so hang onto your trousers: The national debt ceiling is a limit on the national debt.

To illustrate that concept we apparently need an MSNBC reporter in a “spending” shirt to stand under a movable ceiling and repeatedly demonstrate that he’ll hit his head if he gets taller and the ceiling doesn’t move. And throw in some extended narration to explain what you’re clearly seeing.

MSNBC: The Place for Explanations for Idiots.