I thought I had seen/heard it all! Okay, not all, but I'm not exactly a spring chicken and I have my share of life experience. I have NEVER heard of this and it just popped up on FB so of course I had to google, and OMG, it's a thing?! Spitting in your dog's mouth. Yes. You hold the dog's mouth open and spit in their mouth. Because? Because IDK? Reasons? Go ahead. Google it.