Definition of "scumbag"

“A scumbag,” Sonny repeated. “Rubber. A pro-phy-natic. You know what I mean, don't you?”

1978, Sonia Pilcer, Teen Angel‎

Monroney was variously described as a "scumbag," "SOB," "Snake," "dead sheep," [...] and assorted unprintable adjectives.

1953 July 19, Allen Cromley, “Report from Washington”, in The Daily Oklahoman‎, Oklahoma City, OK, page 1