What a comedian

We were signing up Ellie on a website she likes to play with and I was telling her the letters to type in for her username. Her username is Alyssa (she likes that name). We huddled over the keyboard together and I dictated to her. I said, "A" and she typed in A. I said, "L" and she typed in L. I said, "Y" and she paused and said, "Why? Oh, because I want to put in my username." I looked at her and she was sitting there smiling at me. We busted up at the same moment and sat there looking at each other and laughing.