No More Bug

Last night I was putting Lincoln to bed. I had just read him some books and then I turned off the light. I said, "I love you bug. Goodnight." He said, "Mom, why do you call me bug?" I said, "I don't know. Maybe because you're cute as a bug and it's just fun to call you that." He said, "Well, please don't. My name is Lincoln." How can something so sweet and innocent be so gut-wrenching. I just said okay and that I would try. How do you stop a nick-name? Not, that I'm going to. He's not the boss of me! =)