Wikipedia
Kick-to-kick is a pastime and well-known tradition of Australian rules football fans, and a recognised Australian term for kick and catch type games. In its "markers up" form, it is the usual casual version of Australian rules (similar to the relationship between backyard/beach cricket and the established forms of cricket).
Although not a sport in itself, the term is used to describe a social exercise played in parks, fields, streets, back yards and also as a playground game that requires at least two people.
Kick-to-kick is used as a warm-up exercise of many Australian rules football clubs and has been the beginnings of many clubs in far-flung places. It has long been a pitch invasion tradition in the breaks immediately after official Australian rules football matches, although as professionalism in the Australian Football League increased, the practice was discontinued at most of AFL venues.