All of the “#1 Dad” mugs in the world change to show the actual ranking of Dads suddenly.
Most mugs simply change to blank gray.
Upon microscopic examination, it is found that the mugs still bear a Dad ranking– it is printed in an unimaginably tiny font, since the number in question would not, in decimal notation, ever fit on a mug otherwise.
Troubling, that we’re dealing with dads ranked in numbers larger than the number of atoms in this universe, let alone the number of dads.
More troubling, that in a potential multiverse of all dads in all possible scenarios, nobody on this specific Earth has ever ranked better than quadrillionth place.