Three men and a puzzle

My daughter and I wandered into this Zurich Café for Würst salad and to get out of the rain. At the next table were three white-haired men, most likely retired several years, whom the waitress kept kidding with and vice versa. They had sandwiches and coffee but before each of them was a word puzzle. 

Although my daughter, who does speak German, couldn't quite understand the Swiss German it was easy to see what they were doing. In between bites of food and sips of coffee there were smiles when an answer was discovered and/or exchanged.

The meal over, the men paid their bill, promised to see the waitress soon and tucking their puzzles under their arms went out into the rain.