Title: The Joke's on Who? | Psychology Today
Headings: The Joke's on Who?
William Berry, LMHC., CAP.
The Joke's on Who?
Some argue there is truth in every joke. Not necessarily.

Content: In this manner, those using sarcasm in a hostile way are able to express displeasure without taking responsibility for it. Sometimes this passive-aggressive maneuver is successful in that the other takes the hint and changes his behavior. Other times, it is not successful in facilitating a change in behavior (as is likely desired), but still serves as a release. Another possible payoff for masking anger with sarcasm is that the person feels they aired their grievance, the other did not heed, and they have more to complain about. This is an unhealthy way of dealing with conflict, but has its payoffs and is used fairly frequently. article continues after advertisement
However, simply because one of the great minds of psychoanalysis and many who have followed indicate that something is so, does that make it true? In the above cases, it is clear that there is truth in humor. But because there are underlying motives, does that mean there is truth in all humor? It really comes down to how you define truth. If you have a thought, and it comes out in a joke, does that make it true?