Not sure how old this is.. (probably very) but here you go anyway.
http://en.wikipedia.org/wiki/Goatse
scroll down to the 2nd section. "Identity of the "Goatse Man"
"It has also been claimed that the Goatse man is a man named Kirk Johnson, another well known practitioner of anal stretching. ...One of his photographs commonly used as a shock site is Lensman.jpg"
Awww, Lens You have an anal stretching pic named after you. Shall we kick his ass for you? I say we rename GFY to Kirk Johnson!
"Go Kirk Johnson yourself!"