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1.
I Beg to Differ
Sarah: "I think you have a drinking problem."
Doug: "IBTD...I only drink on the days that start with S,M,T,W, and F.
by Serenity884 May 14, 2011
 
2.
"In Before The Delete" Commonly used on World of Warcraft forums in reference to posting in a thread that goes against the terms of service and will soon be deleted.
Original poster creates a thread with inappropriate language or something inflammatory. 58900 other posters respond IBTD before Blizzard notices and actually deletes the offending thread.
by Rain17 November 12, 2007