This triangulated and vapor-waved lying nude contains its source-image, which is embedded using steganography. You can view the source with the help of "steghide", for example through this web-frontend: https://futureboy.us/stegano/decinput.html

Please use "View raw output as MIME-type: image/jpeg" to view the source, which is taken from a "Vintage Erotic" series, I found at archive.org (and which is supposed to be in the public domain).