Original post here. This image was researched by Bacchus at ErosBlog as part of the “Γ commission.” It was originally published at Hedonix as “Γ 006 – Spin Cycle.” Here is Bacchus’s research:

I tried very hard to identify this artwork as the work of Denis Kitchen, cartoonist and founder of underground comics publisher Kitchen Sink Press, as well as the founder of the Comic Book Legal Defense Fund. My notion was that it might have appeared in one of the issues of Bizarre Sex that Kitchen edited and helped illustrate in the early 1980s.

Unfortunately the art style seemed unlikely, and I was unable to find a sample of the same block-capitals “DENIS” signature (under a copyright symbol) that appears in this artwork in any of Kitchen’s works available online. Although he did use a wide variety of different art signatures over his lengthy and prolific career, none of them match. For example, this Bizarre Sex cover is signed “Kitchen” in script, while a recent project available through the shop at Mr. Kitchen’s current online comic art agency is signed “Denis Kitchen” in script. Decorative art on his website is signed “DK” in capitals, while there’s a 1979 self-portrait appearing here that’s signed “©79 DK” and includes a block-lettered DENIS in the artwork that’s not very similar to the signature of the instant piece.

Upon further search, I believe the artwork is a much better match to French erotic illustrator “Denis” who maintains a web presence via this blog. Although the washing machine image is not present there, the art style on display is a very good match for this cartoon. See, e.g., this picture, which also displays a very close signature match on similarly-styled line art against a colored background. This image, too, displays a closely-matching signature and artistic similarities.