When you and your mates go to each of your houses and drink all the alcohol in each fridge. Typically done on the last afternoon of highschool but not exclusively done then. Australian slang.
Mate, whose house is first on our tour de fridge?
Australian slang. A group of friends get together, go to one person's house, and drink all the alcohol in that person's fridge. They then travel to the next location, usually by biking, scootering, or walking, to drink all the alcohol in the next friend's fridge. This process is repeated until the group of friends have visited all of each others houses and drank all of the alcohol in each of their friends' fridges.
This is usually performed on the last day of year 12, however, tour de fridge is not limited to this occasion.
Person 1: Hey, I reckon we should start tour de fridge off at Davo's house.
Person 2: Yeah, sounds good mate. Tommo's house is one block over so reckon we'll go there next.