An in-depth analysis of corny jokes summarized in four simple points.
1. Corniness is a play on words. You have to constantly be sharp and pick up certain things people say and quickly respond with something that's linked to a particular word or phrase, and connect it with something completely different. All in a matter of seconds - corny jokes are delivered as an immediate response, so you can't leave room for awkward silences while you think of what to say. You can't just be corny because you feel like it. It requires wit and intelligence. Have you ever seen a corny person that was dumb?.
2. Furthermore, because corniness is a play on words, if there's a corny person with you, you know they are listening to what you are saying and giving you a good amount of attention. But NOT for the sake of telling jokes. Corny people are natural listeners. Somebody giving you that kind of attention just for the sake of telling a joke, let alone a corny one, is not even worth the energy.
3. Corny jokes are unpredictable, as long as a conversation is constantly progressing. Corny jokes only work once, so every corny joke is a new one. If you were to tell a corny joke that has already been said before to the listener(s), it just becomes plain stupid.
4. Finally, corny jokes don't put people down. Corny jokes naturally do not offend people. If anything, the joke teller gets made fun of for being corny, but in a playful way. If anyone uses corny jokes to offend people, that person is not using it the right way. But I have never seen that case in my life.