Meanings of current witticism in English

He recognized the current witticism of the year as it issued stridently from one of the pairs at his elbow.

At the second meeting, however, they smile again and touch hands in passing, or cry over the shoulder some current witticism, as: "'Snice night, Ethel!"

Full throated laughter and a medley of shouted jibes and current witticisms went with it.