Homicide term; "Painting His Ass" Origion?

[Trailer Park Casanova]

Bench Racers seems to be the best place to ask this question:
"Where'd the term when ya kill someone "Painting His Ass" come from?

[Kim Hanson]

Bench Racers seems to be the best place to ask this question:
"Where'd the term when ya kill someone "Painting His Ass" come from?
The Injuns, shit they paint everything red...........( . )( . )..........