(straight) from the horse's mouth

Getting information from the highest authority.

Origin:
When you get a tip for a horse race, the tip is better as nearer it is to the horse e.g. the jockey or the trainer. When you got it straight from the horse's mouth, you have it directly from the source.

This tip is foolproof, I got it (straight) from the horse's mouth!

(straight) from the horse's mouth by TheSunToucher August 12, 2009

(straight) from the horse's mouth

from the most official source(from the fact that a horse's age can be determined most precisely and directly by examining it's teeth)

He gets his stories straight from the horse's mouth.

(straight) from the horse's mouth by Light Joker July 23, 2005

straight from the horse's mouth

from the highest authority

i'm telling ya, it's true; straight from the horse's mouth!

straight from the horse's mouth by zoon July 1, 2005