Like, wow! I must have dropped it in my pocket by accident.
4 seconds sound clip from Scooby-Doo, Where Are You! - Scooby Doo and a Mummy, Too (S1E12).
You can hear this line at 00:04:05.979 in the Blu-ray version of the episode.
Quote context
[...]
- No! The mummy of Anka is gone!
- Here you are, $1.50 for a job well done.
- What kind of kooky 50-cent piece is this?
- Hey! That's the old Egyptian coin!
- Like, wow! I must have dropped it in my pocket by accident.
- We'll give it to the Professor when we get back.
- Come on. Grab the sandwiches, and let's go.
- Liverwurst and ice cream! What'll they think of next?
- Professor! Professor, we're back!
- Hey, Professor, why are you sitting in the dark?
- OK.
[...]