A snag = a sausage. At Bunnings they used to do a BBQ sausage on bread, usually to support a local community like a sports team or a club of some sort.
Sausage sizzle. A slice of plain white bread, sauteed onions and a sausage. The sausage they use is not my taste though... Found it to be too strong smelling. Ikea hotdogs... Those are my favourite!