It's funny. All you have to do is say something nobody understands and they'll do practically anything you want them to.

In this quote, J. D. Salinger comments on the power of ambiguity and how people often react to things they don't fully understand. He suggests that by saying something that is incomprehensible or confusing, you can manipulate others into doing what you want. The humor in his statement lies in the idea that people will follow commands or actions, not because they understand them, but because they are uncertain or intrigued, highlighting the influence of mystery and perplexity.

Salinger’s observation touches on the human tendency to defer to authority or to follow something that seems important or profound, even if the meaning is unclear. This reflects a psychological concept where uncertainty can lead people to seek direction or clarity, often submitting to someone who seems to have the answers. The quote hints at the idea that people’s obedience can be manipulated by making them feel as though they are missing something crucial.

The humor also lies in the irony that people will follow instructions without questioning them, simply because they don’t understand them. Salinger’s insight might be seen as a subtle critique of society's tendency to accept things at face value, even when they are nonsensical or illogical. His words suggest that people can be easily influenced by things that seem important or beyond their comprehension, opening a conversation about trust, control, and human behavior.

Ultimately, Salinger’s quote reveals the power of language and its ability to shape people’s actions. By using ambiguity, one can manipulate others into compliance, playing on their curiosity and lack of understanding. This quote sheds light on how people often act without fully processing what is being asked of them, demonstrating the ease with which they can be swayed by perceived authority or complexity.