Adult language always lags behind that of the young and, when we catch up, they quickly change theirs in order to remain "ahead" of the oldsters. No sooner do I learn some really hip expression than it fades from popularity and I am made to appear antique for attempting to use it with young people who have already abandoned it. A recent example follows:

I learned from some of the kids at the summer camp where I serve as chaplain that, when someone does something good, one is to extend the index and middle finger of the right hand while curling back the next two fingers (sort of like the Cub Scout salute) and tap these two extended fingers on the left bicep while saying "Mad props." When I did that in my church's high school youth group, they doubled over with laughter ... because it was already out of fashion.

Alas.