Stands for Insanely Awesome Bitch, something that describes the great gynecocynic cynophile M and her utter epitomeness of pulchritude and bitchitude; can be extended to any girl who can be both awesome and a bitch at the same time, thus making them insanely entertaining.
It's what all of M's friends call her, and was first invented and used by the effulgent Zorbalicious.
It's what all of M's friends call her, and was first invented and used by the effulgent Zorbalicious.
"Every girl has an inner bitch, mine's just not so inner," said the crux of iabidity, the one and only M.
by TeamIAB June 5, 2009
Get the Iabmug. IAB - something someone says when they come back from being away from their computer. Similar to the use of "BRB" but for when you come back, not leave. Translates to "I Am Back"
"iab, so where were we?"
by Andy June 19, 2006
Get the IABmug. by Definition of IAB November 16, 2015
Get the IABmug. 
IAB stands for "Is A Bitch" and is used on a case-by-case basis depending on the "Bitch" in question. Just plug in anyone's first name initial and call them a bitch in the group chat. (Do not say each letter when you read it you must pronounce the word)
Nathan Is A Bitch (NIAB)
Jerome Is A Bitch (JIAB)
Gabi Is A Bitch (GIAB)
Arian Is A Bitch (AIAB)
Amberly Is A Bitch (AIAB 2)
Jerome Is A Bitch (JIAB)
Gabi Is A Bitch (GIAB)
Arian Is A Bitch (AIAB)
Amberly Is A Bitch (AIAB 2)
by Che gg April 28, 2021
Get the IABmug. 
Meaning I am back. People say BRB meaning be right back , but what do you say when you do get back????
IAB - I am back
IAB - I am back
by Dopingthehamster July 18, 2021
Get the IABmug.