"Old-School" - A continually used term by all ages, to describe older tradition methods, used by everyone including the younger, hypocritical, gen Yhine gen, who reluctantly uses it because they are too busy whining about many other things, for them to come up with a new and unnecessary replacement term, -which had it been created, should have hopefully set them apart as the next new "cool" generation. Just as many terms/concepts are timeless, such as mini-skirts are always ever fashionable, or term "cool", the current, soon to be replaced gen, is still trying to find a meaningful contribution before hitting middle age.
Hey, man that iphone is pretty and shiny, but it's is so old-school because it's not awesome like my new HTC 3d phone.
To do something in a way that is more in line with traditional technique/style rather than modern or progressive style (such as rap music that emulates the style of the rap of the early 80s). Often used in the phrase, "kicking it old school."