When did they grow up?

I frequently have Nathan let himself into the house when he gets home each day. This way he has a little bit of alone time to do his homework and practice trombone before Madison makes her entrance about an hour later. Most days, I am rolling into the garage a few minutes before or after she gets home. Today I was about 20 minutes late pulling up.



I always wonder what they do when I am gone. Today I entered the house to find this going on:
















I am really not joking! I am just not sure how to punish them!
Happy Wednesday!