I was putting a diaper on Pete after his bath tonight, and he burst into a little exposition on the subject of gratitude: "Home, yay! School yay! Thank you, thank you, thank you!" Oh, Sweety P! You're so welcome!
I tried to stump him last night by asking him where his tail was (while he was trying to hold Giddy's tail). He put both hands right on his backside, very matter-of-factly.