Look at me

Although Pierce can't say the words, I know it's what he was thinking today. I went to the garage to get Cleo's food (or something) while Pierce was having a snack in his high chair. I came back, maybe gone for 30 seconds, to find him sitting on his high chair tray. He made it look perfectly normal. No idea how he did this since the tray was close but he did. And he's do it again. So now we can't leave let go of him once the tray is removed from the high chair because he just wants to stand-up but we also can't leave him seated in the chair with the tray next to him.