Neither can I, sir.
4 seconds sound clip from the Hey There, It's Yogi Bear (1964) movie soundboard.
You can hear this line at 00:23:57 in the Blu-ray version of the movie.
Quote context
[...]
- Cindy, no. What's the matter with you, Cindy? No, no! Uh-oh.
- Ha-ha-ha. Oh, no. Not you, Cindy.
- If you had ever done one wrong thing around here... I might believe it. Ha-ha.
- But you'd have to convince me of that.
[...]