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2.
I'll
Bring
The
Beer
Party at ----- house! IBTB dude!
by Adrian December 14, 2005
 
1.
In Before The Ban

Used on web forums, when someone is acting against the boards rules and will probably be banned from the board.
Person A: Hey Everyone!! Check this out!! www.linktoporn.com
Person B: Whoa That's Disgusting!
Person C: IBTB!
by Mr Jamie October 23, 2005