Every Sunday, across the world, billions of people pray to an invisible sky wizard whom they've never seen nor heard from, and hear stories of this sky wizard's illegitimate son, whom he fathered with a married virgin, and who grew up to be executed, and then came back to life. And they are told that this had to happen because a rib woman, who was married to a mud man, ate a magical fruit that she got from a talking snake. To honor this magic zombie, millions of them eat a piece of bread and drink wine, which they believe literally transforms into his actual flesh and blood.

The originator of this ideology was a man who began hearing voices, and then mutilated his genitals and tried to murder his son.

So yes, billions of people do celebrate abnormal behavior regularly as a matter of course.