An institution in Australian culture, Cheap-arse Tuesday sees many services (eg. petrol, movie tickets, take-away food etc.) drop in price.
It's a day of the week when the tight-arse's of this country can afford to go out and do things or get an affordable meal.
I love Cheap-arse Tuesday because it means I can go and see the new Star Trek movie and get a pizza for dinner, all for under $20.