Caught! This is the look David gets when he drops his tray contents on the floor. We practice "On the tray, David. On the tray." while pointing to his tray. But somehow, he ends up with this face, his arm disapears to his side, and we hear a thud.
Very occasionally, when we coax him to put it on the tray (with our hands moving his arms in that direction) we will cheer for his success. But most often, this is how the saga continues--David inspecting his goods, and probably wondering how they got all the way down there.
Can you see his sippy cup, his teething biscuits, and a few small crackers? Notice that all the items are "dry"--he'll have a chance at a bowl of food in front of him once he can manage to keep these things on his tray.