So everytime I read this manga it makes me laugh. The poem goes snakes and snails and puppydog tails that's what little boys are made of.
The original by poet Southey goes:
What Folks Are Made Of
«What are little boys made of
Snips and snails & puppy dogs tails
And such are little boys made of.
What are young women made of
Sugar and spice and all things nice»
I guess all the others that doesn't fit into those 2 categories are just boring beings made of bones, flesh and blood ╮( ̄▽ ̄)╭
Snips are a type of eels.
In modern versions, you have one as you said with Snakes, and also one about little girls being made of sweets, flowers and sparkles.
Lol for some reason when I was reading the web novel I always thought Hoshino had blond hair. I'm going to have to read it again to see if that was all in my mind. Anyway, yay Hoshino!