The Swiss stereotypes do not usually suggest a great sense of humor. But since I’ve been in Zürich, I’ve noticed a certain style of quiet understated humor, in particular in advertising.
Here’s one ad for the most famous vegetarian restaurant in Zürich (probably the best in the world):
Here’s an ad for the Zürich public transportation system; the left-hand man is a right-wing politician, and the right-hand one a socialist (I had to look this up; I’m not really up to date on local politics), and the ad says that fortunately there is a tram stop on average every 300 meters…
Here’s a recent ad to warn against swimming in the wrong places in the river, despite the absence of sharks (Hai means shark in German):