Whiskey Dick Meaning

(idiomatic, slang) Impotence caused by heavy drinking.

Example: 2008, Alex Bash, The Imbible: Drinking Games for Times You'll Never Remember with Friends You'll Never Forget, St. Martin's Press (2008), ISBN 9780312382292, page 37:
  Objective: There's no objective; you just roll the dice and drink. There's also no winning or losing, unless you consider drinking a lot winning, in which case you'll be the gold medalist of a lifetime. (Note: Gold medals do not prevent whiskey dick.)
2011, Jordan LaRousse & Samantha Sade, Penis Genius: The Best Tips and Tricks for Working His Stick, Quiver (2011), ISBN 9781592334605, page 156:
  However, if he ups the ante to three or more servings of alcohol, he not only puts his heart at risk, but he puts himself at risk of getting whiskey dick and not being able to perform in the sack.
2011, Trina M. Lee, Stay Beautiful, Ellora's Cave (2011), ISBN 9781419933714, page 32:
  â€œThese are two shots. You don't have to drink the whole thing at a time.”
  â€œGood call. I don't want to get whiskey dick.”