What Do Fireflies Eat?

it's raining , it's pouring the old man is snoring it's I, it's me, I can see I can hear, just me here darn that old mirror can't it sometimes lie am getting tired awake street light slat peeking flying clown on the ceiling lighting up his red nose rudolph playing basketball hey hands, meet my feet am sleepy hungry warm milk maybe, something clown, what should I eat what do fireflies eat