The game of cooties lets children learn about the idea of contagion, but kid culture and wordplay aren't meant for adults.
The metaphor isn't just a literary device; it informs our conceptual understanding of language and the world.
The pun is in an interesting bind: it is both ubiquitous and reviled. We try to understand why.
The language we use for people fleeing their home nations may define them as less than human.