Definition & Meaning of "tossbag"in English

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

"Tossbag" is British slang from the late 20th century, built from "toss" (short for "tosser," slang tied to masturbation) and "bag" as a dismissive suffix for a person. The sexual reference became secondary as the term evolved into a general insult meaning a contemptible or annoying person. It is used informally in Britain, often humorously or in mild anger. It is derogatory and vulgar but typically less harsh than stronger insults.