WASHINGTON

At an appearance at George Washington University here Saturday night, Bill Maher bounded into territory that the news media have been gingerly tiptoeing around.

Magic underwear. Baptizing dead people. Celestial marriages. Private planets. Racism. Polygamy.

“By any standard, Mormonism is more ridiculous than any other religion,” asserted the famously nonbelieving comic who skewered the “fairy tales” of several faiths in his documentary “Religulous.” “It’s a religion founded on the idea of polygamy. They call it The Principle. That sounds like The Prime Directive in ‘Star Trek.’ ”

He said he expects the Romney crowd — fighting back after Robert Jeffress, a Texas Baptist pastor supporting Rick Perry, labeled Mormonism a non-Christian “cult” — to once more “gloss over the differences between Christians and Mormons.”

Maher was not easy on the religion he was raised in either. He referred to the Roman Catholic Church as “an international child sex ring.”