Do I look stupid to you...??

Ok so for those of you who don't know I am working at Wal-Mart. So yesterday at work I was at register 20 (the tobacco register) and a guy came through wanting some chew. I went to get him the chew and told him we were out of that specific kind. He told me he would just take the double pack because it wasn't for him anyways. Ok well I had to tell him I couldn't sell it to him because I knew it wasn't for him and he could be buying it for a minor and I could in severe trouble for it. He then decided to act like I was stupid and told me he was then going to buy it for himself. I wanted to ask him, "Do I look stupid to you?? You just told me it wasn't for you! I am not stupid!" Well he got all angry and paid for the rest of his stuff and told me he would just go buy it somewhere else. Fine with me! I can't believe he thought I would really think he was then buying it for himself. Some people need to use a little common sense and think before they speak!