Definition & Meaning of "dirtwad"in English

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

"dirtwad" is a slang insult that appeared in mid-20th-century English to describe a contemptible or worthless person. It combines "dirt," implying low value or filth, with "wad," suggesting a small, useless lump, creating a metaphor for someone insignificant or objectionable. The term is mostly used in informal speech, often humorously or to express mild disdain. It is derogatory but relatively light compared with stronger insults, though still intended to criticize or belittle.