Reminds me of a series of incidents in Iowa following a train derailment of cars carrying feed corn. A number of months following that accident, there was a rash of bears showing up drunk.
Turns out the conditions were just right for the corn (which was left in a pile at the accident site) to ferment into a quasi-whiskey. The bears were coming for miles around to lap up the hooch and were getting pounded out of their skulls.
Shortly after the forestry service figured out what was going on, a few bulldozers were brought in and covered the whole mess with limestone and plowed it under.
Sounds like an urban legend to me. Corn doesn't/won't ferment. Whiskey has to be distilled from corn.