That boy's as thick as a whale's sandwich.
3 seconds sound clip from the Foghorn Leghorn - Pullet Surprise (1997) Warner Bros. Merrie Melodies theatrical short.
You can hear this line at 00:02:37.485 in the DVD version of the film.
Quote context
[...]
- You want Venezuelan racing chicken!
- Yeah!
- Well, you better tie your shoelaces.
- But I'm not wearing any shoes!
- He's gone! Why, he plum ran off all the way back to Venezuela!
- Well, don't just stand there, boy! Go get him!
- That boy's as thick as a whale's sandwich.
- Well, maybe you should give it up, son. Try something easy, like hunting rabbits.
- Uh-uh!
- Giraffe?
- Uh-uh!
[...]