Demi grew up in constant fear of birds, but also Modbury Heights, Adelaide, South Australia.
Demi got onstage at age 16 and has since shared said stage with names such as Jimeoin, Frank Woodley, Gina Yashere. Sammy J, etc.
Since then, Lardner has won the 2013 National RAW Comedy Competition and tied for first place in the 2013 national final of So You Think You're Funny? competition in Edinburgh Fringe.
Demi has also won Adelaide Comedy's Rising Starr Award for Best Newcomer and Bank SA's Best Emerging Comedy Show in Adelaide Fringe 2013 for the production of Wolf Creek, the Musical (co-writer).