Nursery Rhyme
What are little boys made of?
What are little boys made of?
Snips and Snails,
And Puppy Dog Tails.
That's what little boys are made of.
Alternatively, BlueDragon says that "It was always slugs and snails in my day"

Vuo has sent me the Finnish version of the same rhyme, in which you have snails and frogs replacing snips and snails.

Mistä on pienet pojat tehty?
Etanoista ja sammakoista,
koiranhännäntupsukoista.
Niistä on pienet pojat tehty