Arguing with Alex

Alex and I got into an argument last night. Nothing new around here, only this time, it was really hard for me not to laugh at him. Here's the set up. I made homemade chicken noodle soup and grilled cheese for supper last night. Brianna helped me cut up veggies and was an excellent helper. I promised her I would make brownies after we ate. The rule around here is if you don't eat a meal, you don't get a snack in between meals. You eat again at the next meal. Alex did not eat his supper, so no brownies for him. I took a bath to try and get warm, I had been cold since coming in from church. Brianna comes running in the bathroom and said for me to look at the brownies. I came in the kitchen and there were little fingerprints in the brownies. Alex had pulled a chair up to the counter, stood in it and helped himself. Here's the conversation that followed:

Me: "Alex did you eat brownies?'
Alex: "No."
Me: "Alex did you eat brownies?"
Alex: "No, Brianna did it."
Me: "Alex did you eat these brownies?"
Alex with hands held out to his side:"No."
(This is where I start laughing.)
Me: "Alex did you eat brownies?"
Alex: "No, cause you told me later."

It was hilarious! Needless to say, I knew that he had eaten the brownies and he knew that I knew. He was trying to stay out of trouble!