The Church of All Worlds, the invented religion I mentioned in yesterday's post, is largely based on Robert Heinlein's Stranger in a Strange Land and the ideas and rituals therein, including the ritual of sharing water.
The Church of All Worlds website includes a chronology of important events in the history of the church. Here's the entry for 1974 (Tim is church founder Tim Zell, aka Oberzon Zell; MG is Morning Glory, Tim's main squeeze and soul mate):
MG and Tim are married in huge public Pagan handfasting in Minneapolis (April 14). Isaac Bonewits & Carolyn Clark officiate; Margot Adler sings Gwydion songs. Tim & MG share water with Robert Anton Wilson. Morning Glory ordained (Aug. 1). Tim & MG attend sci-fi Worldcon in Wash. DC (Labor Day), win 1st prize in costume contest as “most primal.