straight from the horse’s mouth

(straight) from the horse's mouth

From the original or most reliable source. A: "Is our test really getting rescheduled?" B: "Yep, our teacher was ahead of me in the lunch line, so I heard it straight from the horse's mouth."
See also: mouth

straight from the horse’s mouth

mod. directly from the source, not just a horse. (As if a racehorse were giving racing tips.) This came straight from the horse’s mouth. It’s Zeerocks Copy in the sixth race.
See also: mouth, straight