My Charming Austin

A night or 2 ago Austin popped up out of bed and came downstairs, wanting me to come up and see something. Well, I was tired, annoyed that he wasn't in bed, and I didn't want to go up the stairs again until I had to. This is how our conversation went:
Me - "Austin get in bed now!"
Austin - "But I want to you to see something"
Me - "I'm not coming up now, I will be up later. Go to Bed!"
Austin - "But Why?"
Me - "Because my knee hurts."
Austin - "Why"
Me - "Because that's what happens when you get old"
Austin - "But how can you get old when you are so young?"
Well that just melted my heart, so I gave him a big hug and sent him to bed. Later that night I went in to check on them before I went to bed and this is what I found: