To hallucinate or see things incorrectly due to acute alcohol intoxication or withdrawal. My dad said that he saw snakes for a while after he gave up drinking. You're going to start seeing snakes if you don't stop drinking so much.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.