In Unitarian Universalist congregations, they have a ritual of lighting a chalice at the beginning of worship services, usually by a layperson saying some words of dedication. Here's a phrase you can say which can pretty much guarantee you'll be sitting alone at their next pot luck:
If a million moms believe a foolish thing, it is still a foolish thing.
(apologies to Anatole France for the deliberate misquotation)