Politeness first, please

Porter wanted to play "horsey" with me yesterday. Meaning, I get to be the horse he gets to be the cowboy. I crouched down so he could mount the horse. I said, "You have to talk to the horse and tell 'em what to do." He said, "Okay." I prompted him again, "Say, get up horse." He said, "Get up horse!" I said, "Okay, now what do you want to say." He said, "Thank you, horse."