Definition & Meaning of "douchewagon"in English

What is the origin of the term "douchewagon" and how is it used?

"Douchewagon" is a slang term that appeared in late 20th- to early 21st-century English, combining "douche," meaning a contemptible or obnoxious person, with "wagon" for exaggerated, humorous effect. The term describes someone who is obnoxious, socially irritating, or generally contemptible, often used in informal conversation, online posts, or comedic contexts. It is highly derogatory and intended to insult or provoke, and it is never neutral or polite.