• Who John Jacob Jingle Heimershmitt is. • How to change a diaper in the dark, in a parked car, on a standing child -- all simultaneously. • Which lines of The Cat in the Hat and If I Ran the Circus can be skipped over without a child noticing. • How bright a 3am full moon is. • The design marvels of hooded towels, Velcro-strap shoes and mitten clips. • Locations of the public restrooms (and elevators) all across town. • Why anyone would bother retracing her steps for miles just to retrieve a lost blankie. • How to open a van door while carrying two lunch boxes, two extra coats, a purse, a diaper bag and a baby. • That solid white socks get lost in the dryer at a much slower rate than the mates of patterned socks that coordinate to special outfits. • How little sleep the human body truly needs to function. • Almost every Disney lyric ever penned. • How to spell amoxicillin, let alone say it. • That one can never own too many sippy-cup lids or refrigerator magnets. • Scientific names of dinosaurs from A to Z. • That Duplo and Lego blocks procreate in the night. • The distinctive sounds of Cheerios crunching underfoot. • Why they call them Happy Meals. • How far you can dilute juice and still retain its taste. • That man (or child, anyway) really can live on peanut butter alone. • Sesame Street's airtime. • The blessedness of naps and the inviolate importance of routines. • How much you could love one human being!