- Say, I sure like to know how you pulled that gag. 
- What gag? 'Cause I don't quite follow you. 
- Well, just now before you came in.
7 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 01:21:37.696 in the Blu-ray version of the movie.
Quote context
[...]
- Well, er I rather thought I had an invite from our young friend here.
- After all, Mr. Frere, I'm a ventriloquist myself, you know...
- There's a clean towel in here.
- Thanks.
- Sorry, but I can't bear anyone touching him.
- Oh, that's all right. Forget it.
- Say, I sure like to know how you pulled that gag.
- What gag? 'Cause I don't quite follow you.
- Well, just now before you came in.
- You know, for a moment, I could've sworn it was the dummy speaking. And me a pro.
- Hold on, don't let's start that all over again.
- About you and him? Yes, but you know that.
- You wouldn't... You wouldn't ever do that, would you?
- Say, are you nuts or something?
[...]

 Dead of Night (1945)
 Dead of Night (1945)  Phantom of the Opera (1943)
 Phantom of the Opera (1943)  Scooby-Doo, Where Are You! (1969)
 Scooby-Doo, Where Are You! (1969)  Halloween III: Season of the Witch (1982)
 Halloween III: Season of the Witch (1982)  Knight Rider (1982)
 Knight Rider (1982)