Q: Why do elephants paint the soles of their feet yellow?
A: So they can hide upside down in bowls of custard.
So, all you need to do is find elephants with yellow feet, and the fun can begin. Elephants have trunks, obviously, which they can use as snorkels while so submerged, and also as navigational aids – the tip of the trunk is very sensitive to touch, which is useful in an opaque medium such as custard. Their thick, leathery skin is quite plainly an adaptation against the heat of the custard. Tusks are devices for forcing an elephant’s way through custard that has started to congeal.
I am sure you can think of more.
You may laugh, but think about it: the whole story hangs together perfectly. Every feature of the elephant can be explained in the context of this theory. Furthermore, it’s predictive and guides future research: as an example, the greater diversity of proboscideans in the past implies that there may have been a more diverse array of puddings available in the Miocene-Pliocene, and different species may have specialized to hide in tapioca or spotted dick. Further, there may have been co-evolution; dare I suggest that perhaps the currants in some puddings evolved to feed the elephants and encourage them to hide in their bowls?
That “I am sure you can think of more” is typical British understatement, but bodes well for the productive future of this powerful theory.