teapotism

From teapot (from Russell's teapot) + -ism.

teapotism (uncountable)

1. (rare) Belief in the existence of Russell's teapot (an undetectable teapot orbiting between Earth and Mars).
   • 2007 December 10, jonasand..., “Re: Still at it?”, in talk.origins‎ (Usenet), message-ID <1be88d5a-c545-4f6f-ba2c-b437659ad664@i29g2000prf.googlegroups.com>:

     Then we might have to talk about what it means to be 'foolish'. If believing in a teapot half-way between jupiter and mars is consolidating, fine with me, but if I have to fear for my life because of openly doubting about 'teapotism', then it starts to become foolish... not so?

• optimates