More than 137,000 people have liked a picture showing what breasts look like beneath the skin but the image has divide opinion with some labelling it beautiful - and other's gross.
The illustration shows female muscle structure in a biological diagram and exposes what breasts would look like beneath the skin and fat.
Twitter user @lemonadead shared the diagram and people said they were shook to be learning new things about their bodies so many years after leaving school, reports The Mirror .
The Tweet reads: "I just realised I never saw a photo of a female muscle system. This is NOT what I imagined milk ducts to look like."
The tweet has been retweeted tens of thousands of times and instantly attracted around 4,000 comments.
And while many said they thought the image was fascinating, others said they just wanted to unsee it.
One said: "This made my skin crawl," while another added: "I don't want breasts anymore."
A third wrote: "It looks like a weird alien creature lives inside my body and I'm terrified, "and another tweeted: "Gross, stop showing me this picture."
"Why is everyone saying it's gross," asked a different user.
"It's beautiful to me. I breast fed my kids and wow! Those things nourished my babies," wrote another.
One woman said: "Maybe it's only freaking people out because it's not normalised because of the patriarchy showing us a man's biology in class."
Another tweeted: "Woah, I must of learned what breasts look like by studying men's breasts, cause this is BRAND NEW. I am thinking hard about patriarchy and our educational system. I should not be this old and making discoveries about my own body over Twitter."
