Some species fake other fireflies' glow patterns to lure in blokes and eat them, which is proper dark.
Fun fact: Some female fireflies mimic the flash patterns of other species to lure their males as prey.
Lego, pastries, and a word for cosiness the English-speaking world spent about five years going on about.
Fun fact: The Danish flag has been in continuous use since 1219, making it the world's oldest state flag.