IB

In Before or I Bet. This is then followed by a short phrase without spaces that explain what you are "In Before"

In forum lingo, "IBnooneresonpondstomythread"

by Brandon OBrien April 23, 2006

IB

Incoherent Babbling: basically a folder where you can spam on the adult swim message boards with little consequence.

I'm going to boost my post count by camping in IB.

by grayfox01 May 31, 2006

IB

Abbreviation for instant boner

When Scotts girlfriend touched my leg, i popped an IB and I had to hide it to avoid getting my ass beat.

by Victor Chen December 29, 2007

IB

Short for IlliniBoard

I'm on the IB all day and all night.

by pater July 10, 2003

IB

Irritable Bowels; also known as irritable bowel syndrome (IBS)

She had to cancel her appointment due to IB.

by california10 July 20, 2005

IB

Inspired by. Usually used in the description of an edit, audio, piece of art, etc.

Yea it was IB'ed by Picasso

IB: @/sjwjdjlxnalwkjnlk

by Depressed Noddle March 18, 2019

IB

Just kill yourself

: I am entering the IB program!
: Kill yourself

by CRY_FOR_IB November 12, 2019