Fond Du Lac (WI) Reporter 13 Oct. 8/3: Saloon keepers called the stuff they pushed across the bars to cowboys whisky. What the cowboys called it, however, was ‘bug juice,’ ‘gut warmer,’ ‘nose paint,’ ‘red eye,’ ‘rotgut,’ ‘scamper juice,’ ‘snake poison’ or ‘tonsil varnish.’.at scamper juice (n.) under scamper, v.