Elfism

A writer during the reign of Elizabeth, or soon after, supposed to be no less a personage than the Bishop of Oxford, has, in an ingenious satire, quoted by Sir Walter Scott in his excellent work on Demonology, fixed the period of the decline of elfism - if our readers will tolerate the word — in the latter part of the sixteenth century.

Source: wiktionary

You've demonstrated that theism is more popular than elfism, but that does not mean one is a more valid or reasonable position.

Source: wiktionary

This means that elfism cannot be falsified, even in principle, because failure to perceive these elves (who are, after all, invisible) can always be blamed on one's lack of faith.

Source: wiktionary

Nope - Someone telling me about his or her deity/ies does not make me a theist - it does not convince me. For someone to become a theist, they will have to become convinced that there is a deity - If I informed you about the tiny, little elf in my closet - would that make you an elfist? Hopefully you'd still lack elfism despite my "informing" you.

Source: wiktionary