That way lies madness.
2 seconds sound clip from the Invasion of the Body Snatchers (1956) movie soundboard.
You can hear this line at 00:24:49.244 in the Blu-ray version of the movie.
Quote context
[...]
- I was careful not to let Becky know, but for the first time I was really scared.
- Come in while I turn the lights on.
- You're a forward wench dragging me into a dark hallway to be kissed.
- I'm dragging you into a dark hallway because I'm scared of the dark tonight.
- In that case I'd better stay and tuck you in.
- Madness.
- Well, it's about time you two got home.
- Dad, what are you doing in the basement this time of night?
[...]