He was acting drunk but swore he was sober. Turns out his stomach was brewing its own beer. - The Washington Post

1. He was acting drunk but swore he was sober. Turns out his stomach was brewing its own beer.  The Washington Post
2. A Man Kept Getting Drunk Without Using Alcohol. It Turns Out, His Gut Brews Its Own Booze.  Livescience.com
3. Man’s stomach was brewing its own beer  PennLive
4. View full coverage on Google News

(CLICK HERE TO READ AND SEE MORE)