What is the origin of the idiom "on the rocks" and when to use it?

The origin of the idiom "on the rocks" is uncertain, but it may have originated from the idea of a ship running aground on rocks, which can cause significant damage and lead to the sinking of the vessel. Over time, the phrase has come to be used more generally to describe any situation where something is in trouble or facing difficulties, whether it be a personal relationship, a business venture, or any other situation where stability or success is threatened.