* "Ruh-roh!" This is his classic exclamation of worry, fear, or trouble.
* "Zoinks!" Another exclamation of surprise or fear.
* "Like, scoob!" This is his catchphrase for agreeing with Shaggy.
* "I'm scared!" Scooby-Doo's famous confession of fear.
* "And I would have gotten away with it too, if it weren't for you meddling kids!" This is the classic villain line, often said with a growl or a sinister laugh.
You might be asking what Scooby-Doo says in a specific situation. If you can provide some more context, I can help you figure out the right phrase!