Guys Stomach brews beer! With no aftertaste.

From Smithsonian Magazine: 

What if your husband just got drunk on a moment’s notice? No liquor required—he just started stumbling around and slurring his words. This sounds like a plot from a story, but it actually happened to a 61-year-old man in Texas recently. 

NPR reports that the man “stumbled into a Texas emergency room complaining of dizziness” and, when Breathalyzed, scored a 0.37 percent. That’s five times the legal driving limit in Texas. But he hadn't had a drink. Turns out the man’s own stomach, colonized by brewer’s yeast, was brewing beer—a condition doctors call “auto-brewery syndrome.” The doctors described the case in the International Journal of Clinical Medicine:

Gut Fermentation Syndrome also known as Auto-Brewery Syndrome is a relatively unknown phenomenon in modern medicine. Very few articles have been written on the syndrome and most of them are anecdotal.