What is the origin of the idiom "bust a gut" and when to use it?

The origin of the idiom "bust a gut" is not definitively documented. However, it likely evolved from the idea that laughing extremely hard could lead to the sensation of physical strain or discomfort in the abdominal area, which is colloquially referred to as the "gut." The expression is thought to have been coined as a playful and colorful way to convey the idea of finding something exceedingly funny.