Pardon my ignorance... IBTZ?
Sorry, I read what you said again...my bad.
In Before The Zot. (Don't ask me what a Zot is.)
IBTZ means "In before the Zot". The poster of the IBTZ reply believes your posted article will be pulled by the Moderator, usually because it is liberal nonsense or vulgar, etc., & he/she is trying to post a reply before the entire article is pulled. It's sorta like trying to hit a fast moving target.
As a Rat, you need to be very careful what you post, as the Pubs here are a real POed bunch since last week's election.