- Come on, give me a hand with this ladder.
- It won't reach.

7 seconds sound clip from Scooby-Doo, Where Are You! - What a Night for a Knight (S1E1).

You can hear this line at 00:06:59.135 in the Blu-ray version of the episode.

Quote context

[...]

- Archaeologists?

- England?

- Professor Hyde White!

- That settles it. There's something fishy going on in that museum.

- Museum?

- Right, Scoob, tonight we're going fishing.

- This place is locked up tighter than a drum.

- Then, like, how do we get in?

- Easy. Shaggy goes through that window up there.

- Why me?

- Because that's a small window, and you're the thinnest.

- Oh, boy.

- Come on, give me a hand with this ladder.

- It won't reach.

- I guess we don't get in.

- Well, if we don't get in, we'll never find out what happened to the missing professor.

- Shaggy, you start up, and I'll get the jack out of the Mystery Machine.

- Right.

- Hang on, Shaggy.

- Like, right, man.

- I'll start cranking.

- And I'll keep hanging on.

[...]