Cowboy and his horse get ambushed by indians

So this cowboy is riding his horse on the road, when suddenly he's ambushed by dozens of indians, all painted and armed for war, screaming and waving their weapons at him. He looks around, assesses the situation and, knowing what awaits him, sighs and says: "Well, we're fucked."

His horse, who had been all the while calmly looking as the natives circled around them and screamed, shoots back: "Nope. We're not fucked."

"What?", asks the cowboy. "How come we're not fucked?"

"We're not fucked", repeats the horse, firmly.

"Listen. We're surrounded by all these indians, they're clearly willing to kill us, we're trapped, there's nowhere to run, nowhere to hide, and we can't take them all. How do you figure we're NOT fucked?!"

"Okay, here's what you do," says the horse, still calm. "See that big rock on the floor, over there?"

"Yeah?"

"Well, you get off of me, go over there, pick up the rock," continues the horse, "and throw it hard at that dude over there. See the big guy, with the headdress and the war paint, looking all aggressive and hostile? Yeah, that one. Just throw that rock at him with all your strength."

The cowboy, seeing as he hadn't come up with anything better and was fucked anyway, decides to go with it. So he gets down from the horse, walks over to the rock and throws it at the chief with all that he's got. Rock flies straight in the chief's direction and hits him right on the forehead. The chief falls to the floor, unconscious, as the other indians just get angrier and start screaming louder towards them.

The cowboy runs fast back to the horse, climbs back up and says: "Alright, horse, so what now?"

"Well, NOW we're fucked."