Munro Leaf's stick figures demonstrate what kind of nitwits you shouldn't be in life, e.g., a Bethroom Nitwit who turns on the hot water in the shower before the cold, a Downstairs Nitwit who leaves toys on the stairs, a Nip-and-Nibble Nitwit who eats things that aren't food, a Never-Look Nitwit who crosses without looking, a Firebug Nitwit who plays with matches and electrical wires, a No-Brains No-Breath Nitwit who puts a plastic bag over its head or crawls into an old refrigerator, etc. etc. Simplistically fascinating. ( )