|1.||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.
2: Mark: Man, I'm awesome at this HHNNNNGGGGG.
Jack: Nice Irritable Bowel Howl, there.