Look at him prancing around with that clue in him.
5 seconds sound clip from the After the Thin Man (1936) movie soundboard.
You can hear this line at 01:16:58 in the DVD version of the movie.
Quote context
[...]
- Mr. Charles, there's one of those policemen outside the door right now. What shall I do about it?
- Oh, show him in. He probably wants to question Mrs. Charles again.
- It doesn't say whether they found the gun.
- Oh, I forgot, I'm mad at you. Hmm!
- Look at him prancing around with that clue in him.
- Yes. Oh, yes. Good evening. Will you have some breakfast?
[...]