Be my cigarette?

"What is love?" I asked the guy sitting next to me. The guy I saw for the first time was looking at me frowning. One side of his lip slightly curled up after squinting his brown eyes.

"Are you asking this to a stranger?"

Biting my lips, I said: "I can't see any other sane person here..."

"Naturally," he said playfully, sucking in another smoke from his cigarette. "We are in a mental hospital."