On Yom Kippur there is an afternoon lull when the morning service ends and the evening service begins. Since it is a fast day, adults are usually getting a bit cranky and sluggish by this time. My son was in the Youth Lounge at our synagogue playing games and I thought he might want to go home and have something to eat (he's only seven, too little to fast.)
However, when I got to him, he didn't want to leave, and I saw why. He was engaged in an intense game of pool. A game to which he had just been introduced.
The written manual of Jewish law is called the Shulchan Aruch (which literally means "Set Table" in Hebrew - you can see how important eating is to Jews.) But somehow, I don't think this was meant to refer to racking the billiard bills.
But he'll always have fond (if atypical) memories of the Yom Kippur he learned to play pool.