Yeah well maybe I can do without the dreamin'... [Yes, he knows it isn't possible to function without REM sleep. But when Inara talks to him like he's an idiot, like he doesn't know what dreaming is, he just says the first thing that comes to mind without really thinking it through.] Stay awake long as possible. Yep. Think I can do that.
[His fingertips idly pick at a wrinkle in the soft bedsheet, the material still warm from where she had just been lying. When he speaks again, his voice it a bit quieter.] What sort of nigh-... dreams?