At the top of the newbie board is a link to all the acronyms you will need as well as the newbie manual which is actually extremely helpful.

..."Acronyms and Newbie Manual."

Also see UrbanDictionary.com.

You can also use the 'search messages' feature here. Enter the word or phrase you're looking for, change the default 30 day search to at least 300 days and you should find the answer.