Irritable Bowel Howl 

A low pitched howling noise someone with IBS makes when they are feeling some kind of discomfort, often emotional. It can also be used to accentuate a sentence with little to no effect. The noise can be be best described as the sound that a dinosaur would make when hit by a train.

1: Zack: Joe, you're retarded.
Joe: HNNNNNGGGGGGGG

2: Mark: Man, I'm awesome at this HHNNNNGGGGG.
Jack: Nice Irritable Bowel Howl, there.

Irritable Bowel Howl by srj1224 February 3, 2010

Irritable bowel syndrome 

irritable bowel syndrome is a type of person that makes weird sound effects when they are talking and refuses to kiss their boyfriend at the door.

Oh that irritable bowel syndrome she left my man hanging at the door and started squawking while she was telling me about a hike she went on.

Irritable bowel syndrome by zeebeegeez November 16, 2018

irritable bowls syndrome

when your pipe runs out of weed and it becomes angry, also known as IBS (irritable bowls syndrome)

my pipe has irritable bowls syndrome and is angry

irritable bowls syndrome by SUPAHIGHWAY May 12, 2016