Possible Clues:

• Start of a Fred Flintstone cry
• '-- dabba doo!'
• "— dabba doo!"
• Stone Age toon word
• Part of Fred Flintstone's yell
• Start of Fred Flintstone's cry
• Word heard in Bedrock
• Beginning of a Flintstones cry
• Start of a cartoon cry
• Start of a 'Flintstones' shout