Look, if you two are in this together, I don't care, it's none of my business, but I want to talk to Marion and I want her to tell me it's none of my business and then I'll go...
9 seconds sound clip from the Psycho (1960) movie soundboard.
You can hear this line at 01:01:46 in the Blu-ray version of the movie.
Quote context
[...]
- Bob, run out and get yourself some lunch, will you?
- That's okay, Sam. I brought it with me.
- Now, what thing could we be in together?
[...]