my bottom is not food

The other day Micah was being funny and went overboard to being naughty, trying to get him to behave I asked him to stop jumping off the couch very sweetly, he was about to ignore me, so I told him I would bite him on the bottom if he disobeyed, he stopped and looked at me and said, "no mummy, my bottom is not food"... and said oh so seriously!! I love that boy.