‘Sarcasm’ Is Also A Greek Word And We Hope That’s What They’re Being

(I work in a call centre. My coworker is spelling something out to a customer using the phonetic alphabet.)

Coworker: “‘D’ for Delta…”

Customer: “What? What is ‘delta’?”

Coworker: “It’s a Greek letter; we use it in the phonetic alphabet—”

Customer: “I don’t speak Greek! This is an English service! Speak English!”