1) Language spoken by geeks, such as computer programmers or tech support, which uses standard English words combined with technical jargon, such that the Geeks can understand each other, but to the end user, it sounds like a foreign language.
2) Use of standard English in a formatted text file, such as XML, such that it is difficult to understand, yet it sill uses standard English words, which only Geeks can understand
The guy from the help desk was here to fix your computer. I don't know what was wrong with it. Even though he told me what the problem was, he was speaking Geeklish, and I didn't understand a word.