- What's Scooby doing?
- Oh, he's still fishing.
- Ah, come on, Scoob. Give up. You're not going to catch anything in that bucket of water.

Fred Jones (Frank Welker)

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

You can hear this line at 00:20:35.377 in the Blu-ray version of the episode.

Quote context

[...]

- I get it. The pole would make a metallic sound when it hit the armored car.

- Yeah, and then they'd pull it up with the winch.

- They had us fooled for a while with an old smoke screen trick. Show them, Velma.

- Zeke the witch could appear and vanish as if by magic behind a cover of smoke. Watch.

- Well, they sure had everything figured out, but where they're going, I don't think their disappearing act will ever work.

- Well, what started out as a fishing trip sure ended in a dandy mystery.

- What's Scooby doing?

- Oh, he's still fishing.

- Ah, come on, Scoob. Give up. You're not going to catch anything in that bucket of water.

- Hey! Finally! Lookie! Lookie! Lookie!

- Wow! Wonderful! Wowie! That's one fish story no one will believe.

- Scooby Doo!

- Oh, wow! They sure picked a creepy enough place to read a will. And a creepy enough night, too.

- Yeah. Like, you would have to inherit a fortune, Scoob.

- Sorry.

[...]