Oral bacteria in Finnish have a name:
Tooth troll, which makes them sound less lame.
Instead of tiny things that you can’t see,
A hairy humanoid on a tooth-drilling spree.
I imagine them with tiny stone axes,
Working harder with higher sugar taxes.
Hacking wildly away at the layer of enamel,
Storing all the sugar like water in a camel.
That’s why they sometimes cause halitosis,
Unkempt and sweaty, just like Moses.
They hate it, of course, when you brush your teeth,
Takes away the dirt layer, naked underneath.
Bacteria are abstract, trolls are concrete,
A good metaphor is useful and neat.