Hee hee hee! Scooby-Doo!
4 seconds sound clip from Scooby-Doo, Where Are You! - A Night of Fright Is No Delight (S1E16).
You can hear this line at 00:18:09.958 in the Blu-ray version of the episode.
Quote context
[...]
- That's it! Come on, everybody. To the laundry room.
- Like, I've seen some goofy traps before, but this is the goofiest.
- We use a fan, some soap suds on the floor, a spring-loaded ironing board, and a washing machine.
- And when those ghosts come through the door, we're going to take them to the cleaners.
- Now, let's see how it works. Ready, Scooby?
- Ready.
- Fan on!
- Yay!
- OK. Daph, Velma, and I will lure the ghosts through the doorway.
- When I yell now, you switch on the fan, Scoob.
- Right.
- Now?
- Oh, no! Scooby turned it on too soon!
[...]