Glossary of Terms

In my subculture there are many words that we use to talk to eachother that many other people may not understand or know. For example, my sister and I have nicknames for eachother that mean something. They are fun little nicknames that are just between us. We as have like a hand shake it is not really secret but it is just between us. Also since we have grown up in the same house together we use alot of the same words. Right now, I cannot think of any off the top of my head. An example of us communicating without anyone knowing would be to look eachother in the eyes and we know exactly what the other is thinking. Also to get eachothers attention we kind of do a little head nod to each other. So far not one time have we not known what the other is thinking. Doublement is meaning like double trouble. People say doublement when we are together.