A man and woman on their honeymoon

A man and woman are on their honeymoon doing a horseback trip through the Grand Canyon. The ride is going well until the horse gets spooked by some shadows and comes to an instant stop, jostling the lovebirds a little. The man is annoyed by this and gives the horse a hard smack on the back of it's head saying "horse, that's 1". His new wife finds this a little strange and asks what that was about but he only replied she needn't worry about it.
An hour passes and everything is going good until some rocks fall a little ways ahead and scare the horse worse than the first time, almost throwing the newlyweds off. The man is far more annoyed than the first time so he gets off the horse and punches it as hard as he can in the face and says "horse, that's 2". The woman is slightly more concerned now and asks what he meant. Again the husband replies not to worry about it.
Some more time passes and the weather turns a bit and the sky goes dark. There's a loud clap of thunder from the distance and this really scares the horse who rears up on it's hind legs throwing the riders off, but thankfully no one was hurt. The man is furious now though. He pulls out a revolver he's carrying, walks to the horse and says " horse, that's fucking three" and shoots the horse in the head.
The woman sees all this and starts freaking out. She's hysterical, screaming and crying, calling him all sorts of names. The man walks over to her, puts a hand on her shoulder, looks in her eyes, and proceeds to give her the hardest slap of her life saying "woman, that's 1.