From A for absentmindedness to Z for zoo, this collection of best jokes and their telling hints is an after dinner speaker's pick-me-up. There are come-uppances and put-downs and riddle-q-lous quips. Hundreds here including the elephant variety: ""What has four legs, gray skin, and a trunk?. . . . A mouse on vacation."" And we can contribute a new one for the good old summertime--City sightseeing is a riot!