This term is used to describe the socialising of various
youngsters in both chilled and more excitable modes of activity.
Normally, young people who are described by this term are consuming beer (Beers) and
cigarettes (Rettes).
Prior to, and once decided on pursuing this course of
entertainment for the evening, young people tend to chant (at various volumes) this phrase, to help ensure it happens.
Paul: Hey man
what do you
want to do tonight?
Peter:
I don't know man - maybe we can just go chill with some beers and rettes
Paul and Peter: BEERS AND RETTES, BEERS AND RETTES, BEERS AND RETTES.