I have found out how easy it is to pass on bad habits to your children...you just simply let them watch you perform your bad habits and they copy you! Here is such an example. There is a possible chance that I occasionally drink straight from the milk carton. So the other day, Rob threw away an empty carton and Ava went over and picked it up. She then tried drinking from it. See, a bad habit passed on with little effort involved on my part!