Back in December, Facebook came under fire for removing pictures of young mothers breastfeeding their children, claiming that such photographs violated the site’s Terms of Service.

While Facebook made it clear that breastfeeding was officially banned, they remained a bit vague and tight-lipped on the subject of nipples in general.

Naturally, female nipples were a ‘no-no’. But, what about a man’s?

Phil Hansen, the curator of the Art Happening blog, endeavored to answer this question, and this was the result:

In less than four days, Facebook removed Hansen’s nipple mosaic.

Lesson learned: Hairy man-nipples in gross excess are a not welcome on Facebook.