TATSNBN
TATSNBN is The Abomination That Shall Not Be Named A Term used to refer to the 4th edition of the Dungeons & Dragons game (produced) by Wizards of the Coast, used primarily by those who prefer the earlier (TSR-produced) versions. It is a tongue in cheek play on the abbreviation TETSNBN.
If I didn't want to discuss TETSNBN, what makes you think I would want to discuss TATSNBN.