Everyone poops

But do they make this face when they tell you that they have gone poop?

I just couldn't pass it up.  We were outside playing and Thing 2 just all of a sudden stops and comes over and tells me "poo poo" while making this face.  He's not in the act of going, but has already gone.  I'm really not one for potty humor, but this was just too cute.  I know he'll kill me later when I show his girlfriends.