IBS 

An intoxicated beaver smuggler.

Hey man, do you know of an inexpensive way to get beavers across the border? Yeah bro, I know an IBS who will do it for dirt cheap.

IBS by heyhey(hey) April 26, 2006

IBS 

Incredible Book Syndrome. A condition requiring frequent and prolonged trips to the bathroom in an attempt to finish a book with minimum interruptions from friends or family members.

I wanted to finish up Assassin's Quest the other night, but my wife wanted to watch Dancing with the Stars together, so I came down with IBS.

IBS by tycho82 November 8, 2012

IBS 

Irritable Bhatia Syndrome

He spent the whole morning crapping all over us. It must be his IBS acting up.

IBS by Cougar and Cub September 11, 2012

ibs 

itchy butt hole syndrome

While going on a walk with her friend Sally announced, "I wish that guy wasn't walking so close. I have major IBS that I need to attend to."

ibs by MissLK August 14, 2009

IBS 

Means itchy ball sindrome, it is when a guy's sack gets itchy for no aperant reason and he can barely resist the urge to scratch

"I have major IBS."
"I have to go to the washroom and relieve my IBS."

IBS by m man February 7, 2005

IBS 

IBS or Irritable Bowel Syndrome is a syndrome that causes Irratic, uncontrolable and usually Explosive Diarehhea.

Joe: Damn guy last night at the bar Ian's IBS was acting up again and he had a shit explosion on the dance floor!

Guy #1: Dag Yo!!!

IBS by JoeyAnger69 December 9, 2007

IBS 

Stands for "Itchy Balls Syndrome"

Omg Brian has IBS!

IBS by brianshitface October 21, 2011