Huh?

I’m driving to work this morning, listening to the radio, when an ad for 24 Hour Fitness comes on. For the most part, I’m tuning out the blah-blah-blah, but a line at the end of the obligatory rapid-fire disclaimer caught my ear:

Not all locations open twenty-four hours [a day].

So why do I hear Monty Python running through my head now? (“If we took the bones out, it wouldn’t be crunchy, would it?”)