Bring your own *insert "B" noun here*.
However, I have seen people insert non-B words, because people really are stupid.
BYOB usually stands for Bring Your Own Beer, but some people can't grasp that concept.
The language of the newbies (net speak, chatter slang, etc.)
Jimmy: HEYZ SUP??!?!?!?! I JUS WENT 2 SKOOL!!!!!!!111
Johnny: Stop talking newbian, you look retarded.