What's the symbol for plutonium? Pee-yeeeewww!
Babies are full of all sorts of crazy chemistry, as anybody who's changed a green diaper can tell you. Fortunately plutonium generally isn't on the list of things you might find in your baby's diaper (half a crayon, however, is).
Much like plutonium, babies' diapers should be handled with certain precautions. Overall, they're unstable. Reaching critical mass is generally an unpleasant surprise, and, even when planned, something you don't want to be anywhere near. Probably a lot of parents would feel safer performing diaper changes via glovebox, where they have the luxury of breathing separate atmosphere since inhalation is risky. And proper handling/storage of waste is always a concern. Fully-accredited disposal facilities are a must.
The symbol for plutonium printed in cream on brown, 5 oz., 100%-combed, ringspun cotton. Short sleeves with lap shoulders. Reinforced three-snap closure.