Ever get confused when you read a legal contract? Or confused when you speak to an I.T. specialist about something? It should, because most likely it is purposely confusing.

It serves 2 purposes.

Firstly, it keeps outsiders in the dark. I work as an engineer, and I have lost count at how many times I have got myself out of trouble in jobs by purposely speaking at a technical level far beyond who I am speaking too. I don't want give away what went wrong and they don't want to look stupid by asking me to explain it in layman's terms. It is protectionist behavior. Some of what I do is hard, but some of what I do is very very easy, and anybody could do it, but I don't want clients or superiors to know that, they should think everything I do is rocket science. This is very common in law and medicine.

Secondly, using insider language helps build rapport. If you speak in a way that you and another understand, but others don't. You tighten your bond, because you build a unique little world where only a few understand. A good example is PUA forums. Why do you think it is filled with so much lingo rather than just basic, accessible English? There is nothing in PUA that can't be described in a way everybody understands. The reason is to make everybody feel special, that they belong to some kind of inside information, this is a subgroup that you know and understand and others don't. Only a PUA can understand PUA. Knowing lingo doesn't improve your skills with women at all. But it does make you fit into this community of men better.


Sometimes this is relevant to PU

I encourage you to make up and share language interpretations with the women of your life. The more language you use that only the 2 of you properly understand, the more insider jokes you share, the stronger your rapport. Don't force it, because it will become weird. But when opportunity knocks, then encourage and participate in creating your own little unique world that only you and your girl live in.

It doesn't even need to be language, it could be every time something happens you glance at each other or squeeze her hand. Non-verbal cues are great for rapport building.

I'll give you a simple and stupid example. I did a university class where the lecturer always brought up their time in Indonesia. One day myself and a girl joked about how he can't help but bring it up even when it's not relevant. The next time we're in class and he did it, we looked at each other to make sure we both picked up he was doing it again, and then both smiled. This repeated throughout the whole course.

I have also seen it used by females to AFOG each other. If you are close with a girl, and the 2 of you converse with a new woman. She will increase how much she uses nicknames, 'in-jokes' you shared and insider language. It's a territorial display. She is making a barrier for the new girl to properly engage in the conversation by using language in a way she doesn't understand.