Our neighbor's daughter loves our dog. She hugs him and kisses him and sits on him and tries to give him all kinds of treats to eat. Obviously, he is a very patient dog. The other day, she was over with her daddy and was loving on him as usual, when daddy looked over and noticed that she had taken the gum out of her own mouth and was trying to stick it in our dog's mouth. Very kindly, he explained to his almost 2 year old that this was not a good idea. She stopped, looked a little offended, but then went on her merry way.
(I recommend, if you have or will have children, a Golden Retriever because they are such sweet and forgiving and tolerant and accomodating dogs. We've had ours since he was a puppy and now he's 11 and he's still calm most of the time but fun and ready to play when apprpriate.)