While jokes vary across nationalities, there are many which have stood the test of time, including the infamous knock-knock joke, variations on "a guy walks into a bar," and variations on a joke comparing the reactions of various religious leaders.
A classic knock-knock joke uses puns and wordplay and runs as follows: "Knock, knock. Who’s there? Iva. Iva who? I’ve a sore hand from knocking!" 'Guy walks into a bar' jokes also find humor in wordplay and in undercutting listeners expectations when confronted with a familiar situation. For example: "A hamburger and a french fry walk into a bar. The bartender says, "I'm sorry we don't serve food here." Another common joke format compares the reactions of three individuals to an often outlandish situation. An example of such a joke is: There were three men on an airplane somewhere above the Atlantic ocean. Suddenly Death appears on the plane. He says "Before I take you all with me I'll give you a chance to survive. Each one of you will throw something to the ocean and if I find it you will die". The first one throws a needle. Death goes down to the ocean searching for it. After a couple of minutes he comes back with the needle. The second one throws a hair. Death goes down and after ten minutes he comes back with the hair. The third one quickly throws something and Death goes down again. About an hour later he comes back and says to the guy "Ok you win, I'll let you live. But tell me what did you throw?" The guy says "An effervescent tablet."