It's more general than internet humor. In general, people in community A talking about disparate community B in the language of community A will find it funny.

It's more general than internet humor. In general, people in community A talking about disparate community B in the language of community A will find it funny. For example, programmers at a baseball game talking about baseball in terms of programming, like calling one team emacs and the other vi or one Linux and the other Windows, and then following where it goes.