The REAL reason Santa is so jolly!
The active ingredients of the amanita mushrooms are not metabolized by the body, and so they remain active in the urine. In fact, it is safer to drink the urine of one who has consumed the mushrooms than to eat the mushrooms directly, as many of the toxic compounds are processed and eliminated on the first pass through the body.
It was common practice among ancient people to recycle the potent effects of the mushroom by drinking each other’s urine. The amanita’s ingredients can remain potent even after six passes through the human body. Some scholars argue that this is the origin of the phrase “to get pissed,” as this urine-drinking activity preceded alcohol by thousands of years.