Peer pressure starts at a very young age. I told my granddaughter who is two to stop picking her nose that it was grouse. I went to get her a tissue only to return to see her eat the booger on her finger. I said ooh yucky why did you do that? She said her brother does it all the time. Just like many other things that people are doing around you that you know are not right that you shouldn't do that hurt others. You shouldn't eat your boogers either! Just because other people do it doesn't make it the right thing to do.