Reading books with Henry

Henry likes to go through 2 picture books that my mom gave him and name the single item that is on each page. So, it always starts out a little mundane until you get to the following items:
"Bug" - which he calls, "Ladybug ouchy? no ladybug tickle, bee ouchy, drangonfly ouchy? no, dragonfly tickle."
"Feet" (picture of soles of child's feet) - which Henry hysterically defines as, "Boy fall down."
"Bike" - because it looks uncommonly like one that Henry has had bad experience with - he calls it, "Bike Henny fall off".
And, this one was new to me today. We came to the picture of the bed and he said that he liked that one best and called it "big bed". I asked him if he is ready for a big boy bed and for the first time ever he agreed that he was, and pointing to the crib he said, "not this bed."