Having an intoxicant enema, the main purpose of which is to bypass the vomiting reflex, though it also causes the active ingredients to be absorbed faster, for more fun and greater tissue damage. Apparently Mayan priests used to do this with mixtures of alcohol and powerful tropical hallucinogens, and the ones who survived often had strange insights, now sadly lost to us.

The act of ingesting alcohol through ones rectum. The idea is to increase the alcohol's effect and the speed with which one becomes intoxicated.

An allegedly real thing kids these days do to get drunk very quickly.

Butt chugging really needs no explanation, because it is exactly what it sounds like: A person ingests alcohol from an orifice that is not the mouth, which allows the alcohol to bypass the liver’s filtering and metabolic processes so that the ethanol drains straight into the bloodstream.

It’s supposed to be an intense and near-instant buzz.