Honestly we are all insecure dicks. If the roles were reversed and you didn’t have a stutter, you would have also had a chuckle with your friends if someone approached you and said ca ca can I have a lighter. Unfortunately that’s how humans are in groups. It helps to think that these people are not assholes but just your average humans. Those who don’t laugh are actually quite special. Now not drinking is another questions. I have been struggling with a few addictions myself. It’s not easy friend. Drink if you have to, but not drinking will make you feel better about yourself once this feeling passes. Try not to give in, I wish you strength.