- Hey, Shaggy, what kind of a creepy shortcut is Freddy taking?
- Search me, but it's creepy.
- Well, I didn't know it ran through such a spooky swamp.

9 seconds sound clip from Scooby-Doo, Where Are You! - Which Witch Is Which (S1E13).

You can hear this line at 00:01:43.376 in the Blu-ray version of the episode.

Quote context

[...]

- Huh? Scooby, I always knew you were a little batty!

- Hee hee hee! Scooby Dooby Doo!

- Some fishing trip this turned out to be.

- Like, not even a nibble!

- Well, it looks like Scooby isn't giving up yet.

- Hey, Shaggy, what kind of a creepy shortcut is Freddy taking?

- Search me, but it's creepy.

- Well, I didn't know it ran through such a spooky swamp.

- You mean, this is the first time you've ever taken it?

- Yeah, but it's the last time, I hope.

- Oh, brother, we're lost!

- Maybe not. Look! There's someone up ahead. Let's ask him how to get out of here.

- Excuse me. Kind sir, can you show us the way to the main road?

- Uhh! Uhh!

- Zoinks! A zombie!

- Zombie? Yikes!

- I guess this is Swamp's End. I don't know where it is, but I'm sure glad we found it.

- Me, too.

[...]