What is the name of this Aussie movie?

Sometime in the 90’s I watched an Australian movie and for the life of me I can’t remember the name. It was about this guy who’s mother told him that the air outside was poisonous and that he couldn’t go outside. He ended up killing her by wrapping her head in saran wrap and then went out into the outside world and became a rock star.

Does anyone remember this movie and what it is called?

Never mind, I found it, it was called Bad Boy Bubby.