He taps some ash into the ashtray, watching the embers glow at the end of his cigarette.

"I've never slept on a prison cot, but I used to be a cop."

He mentions it as casually as he can, and looks up to gauge her reaction. He doesn’t like mentioning his job too much, or former job rather, but he’s also learned some valuable lessons about lying about your identity to friends. Since lies of omission count as lies, he figures he should tell her now that she’s brought up prison.