I put a wet Calphalon pot down flat on a wet synthetic countertop. None of the surfaces or liquids was hot. Bubbles started appearing a second or two later from under the rim of the pot in one area. (Video.) It looked as though air was trying to escape form under the pot and forming bubbles because of the water, perhaps as if the air pressure was greater under the pot than everywhere else. Anyone know why?
I think your intuition is basically correct. I see two possible explanations: