* "Hosed" as a verb: The most common explanation points to the verb "hose," meaning "to spray with water." This likely stems from the idea of being sprayed with water, often in a humiliating or uncomfortable way, like a fireman hosing down a burning building.
* "Hose" as a noun: Another theory suggests it comes from the slang use of "hose" as a noun, meaning "a tube," especially a hose used for illicit activities, like smuggling alcohol during Prohibition. So, to be "hosed" could mean being caught with the "hose" and in trouble.
* "Hosed" as a slang term for "drunk": Some suggest "hosed" originated as a slang term for being drunk. This might be connected to the imagery of a drunk person swaying and appearing "watered down."
The earliest known use of "all hosed up" dates back to the early 20th century. The exact origin remains debatable, but the most plausible explanation is likely the combination of the verb "hose" and the slang meaning of being in trouble.
However, it's important to note that the phrase is primarily associated with Australian and American English, and its usage varies across regions and demographics.