Idiom: Hear something straight from the Horse’s Mouth Posted on 17th April 201816th April 2018 by DoubleClick Hear something straight from the Horse’s Mouth: to hear something from the authoritative source. Example: I have heard some information yesterday, and it’s straight from the horse’s mouth. 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 H.