Here's something you may have happen: sticky valves. Maybe it's the Florida heat or the Florida humidity, or maybe it's just the brand of tubes I've been getting lately, but my valves have tended to be sticky this summer. That is, I unscrew the valve, press down to be sure I've got it fully open, then attach the pump head, and...the tire doesn't fill with air. In fact, the air that I'm pumping must stay only in the pump hose, because I see the gauge being pegged to the right.

In these cases, usually I can flip the lever on the pumphead a couple of times and the stubborn valve will then open. I mention this because it may be happening to you or someone else. Weird, but manageable.