Just one bite?

This is Mr. Boy. He likes to crawl, drink milk bottles, and bite every once in awhile. Griffin and I have gotten the worst wounds as we tend to be around him the most. Sometimes he'll just lean into my shoulder and latch on. It hurts! I say "no bite Brody!" and put two fingers against his lips, but the kids only hear that and want him to bite them so they can reprimand him as well. Not working.