Answer: yabbadabbadoo

AnswerCrossword Clue
YABBADABBADOO

Heard from 16A

YABBADABBADOO

Cartoon quitting-time shout

YABBADABBADOO

Fred Flintstone shout

YABBADABBADOO
Classic cartoon shout
YABBADABBADOO
Stone Age shout
YABBADABBADOOCry of Fred Flintstone