She jerked her thumb in the general direction of the sister's departure and said with a chuckle,"She thinks I've got a kangaroo loose in the top paddock."I looked at her blankly. "A what?"She looked at me in astonishment. "You know - sixty degrees in the water bag."When she saw that I was still looking at her uncomprehendingly she exclaimed in exasperation, "Young feller, don't you know anythin'? A few bob short of the full quid... orf me flamin'...