Penny: You’re not really interested in the homeless, are you?
Dr. Horrible: No, I am, but… it’s a symptom. You’re treating a symptom while the disease rages on, consumes the human race. The fish rots from the head, so they say. So I’m thinking, why not cut off the head?
Penny: [pause] Of the human race?
Dr. Horrible: It’s not a… perfect metaphor.