The meaning of the Acronym IBS is...

IBS is

• Idiot Boy Syndrome

More Meanings For IBS:

• Input Buffer Size
• Internet Business Solutions
• Infinite Brush Studio
• International Business Studies
• International Business Students
• Institute of Broadcast Sound
• Irritable Bull Shit
• Idiot Boy Syndrome
• Interactive Blowing System
• Inflatable Boat, Small
• Itty Bitty Ship (SEAL team)
• International Babyz Search
• Immediate Benefit Statement
• Interchangable Barrel System
• Imlibund Bust Stand

IBS is also in:

• Academic Degrees
• Adults
• Funnies
• General
• Plastics
• Ship Types
• Software
• Unfiled
• Universities