What are little boys made of

What are little boys made of? What are little boys made of? Frogs and snails and puppy-dogs' tails, And that's what little boys are made of! What are little girls made of? What are little girls made of? Sugar and spice and all things nice, And that's what little girls are made of!

What are little boys made of? - Из чего сделаны мальчишки?
frogs and snails and puppy-dogs' tails - (они сделаны) из лягушек, улиток и щенячьих хвостиков,
sugar and spice and all things nice - (они сделаны) из сахара, пряностей и всего самого вкусного.