Idiom: Drink like a fish Posted on 14th March 201813th March 2018 by DoubleClick Drink like a fish: drink excessive amounts of alcohol. Example: Many of my old friends say I was drunk like a fish, but I don’t think I have drunk too much, only too often. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Posted in Idiom and tagged Idiom D.