go ass over tit / tip

What is the origin of the idiom "go ass over tit" and when to use it?

The origin of the idiom "go ass over tit" is unclear, but it is thought to be related to the idea of losing one's balance and falling forward, causing the body to flip over in a sudden and unexpected way. The addition of the words "ass" and "tit" or "tip" is likely intended to add emphasis or humor to the phrase. Over time, the phrase has come to be used more generally to describe any situation where someone falls or tumbles in a sudden and uncontrolled way, often resulting in a sense of disorientation or confusion.