A wig, flairs, and a fake moustache, and Mad Dog Malcolm Cummings was born. The creation of Adelaide comedian and musician, Gerry Masi, Mad Dog is part crooner, part playboy, with a light splattering of sleaze. Together, he’s a hilarious 1970s character, that is all too familiar. In this interview we talk call backs, one liners, getting away with ‘inappropriate’ …