Gullivers Travels by Part 4 Chapter 2 Page 4

I pinched my arms and sides to awake myself, hoping I might be in a dream. I then absolutely concluded, that all these appearances could be nothing else but necromancy and magic. But I had no time to pursue these reflections; for the gray horse came to the door, and made me a sign to follow him into the third room where I saw a very comely mare, together with a colt and foal, sitting on their haunches upon mats of straw, not unartfully made, and perfectly neat and clean.

The mare soon after my entrance rose from her mat, and coming up close, after having nicely observed my hands and face, gave me a most contemptuous look; and turning to the horse, I heard the word Yahoo often repeated betwixt them; the meaning of which word I could not then comprehend, although it was the first I had learned to pronounce.