Nice girl, but about as sharp as a sack of wet mice.
4 seconds sound clip from the Foghorn Leghorn - Lovelorn Leghorn (1951) Warner Bros. Merrie Melodies theatrical short.
You can hear this line at 00:03:40.618 in the DVD version of the film.
Quote context
[...]
- But...
- O-oh!
- Look, sister, is any of this filterin' through that little blue bonnet of yours?
- Yeees.
- Nice girl, but about as sharp as a sack of wet mice.
- Alright, Salome, give papa the pretty melon. Gimme that casaba you pea-brain!
- I'm wide, I say, I'm wide open. Shoot me a lateral... That's you passing a kill.
[...]