Flat Out like A Lizard Drinking

Flat out like a lizard drinking is an Australian colloquialism meaning busy – actually, very busy. It is an amalgam of the Australian metaphor for going “flat out” i.e. fast, working at top pace, with to the vision of a lizard, usually pictured as a goanna, crouching at the edge of a waterhole, having a drink. , ("Haven't seen you for a coupla weeks, mate". "Yeah, been flat out like a lizard drinking; putting in fence posts." "Cripes! You must be fit as a mallee bull")