My little guy is 8 months old and has become a very big biter. He started when he got his first tooth but I was able to get him to stop. Now that he has 4 there is no stopping him. I have tried popping him off and firmly telling him no, I've shrieked to try and scare him, I've removed my nip and didn't let him back on but nothing is working. He has also taken to biting us in general. He will lift my shirt and bite my belly, he bites our shoulders and our legs. Is this just a teething thing? Will it pass? Anyone have any suggestions?