A clumsy man walks into a bar.
He says, "The next drink is on me!"
I had to explain the joke to my wife who has a rather limited sense of humor.
I told her a joke is not funny if it has to be explained. It ruins the spontaneity of the thing.
She replied that the joke was not funny - explained or left unexplained.
I told her humor was not universal.
Note: The above photo is of the late, great comic W.C. Fields from The Bank Dick.
Try saying the joke in W.C. Fields voice - ah, yes...