The 4-Year-Old has been gleefully indulging in his idiosyncratic version of potty training (omigod), the 10-Year-Old has by some gruesome mistake been allowed to learn about chemistry and physics as applied to an otherwise uneventful summer vacation, and the 5-Year-Old -- she has discovered how to be fearless in the water without the intervening step of "learning how to swim."
Pissed off about a few things, though. Hang on.