I don't think it's "a goatse." It's just an allusion to the image that was the splash page for goatse.cx, read together ("goatsecx operator" is less funny). It was something of a rite of passage for online life 10 years ago. The original and much more potent Rickroll. Sadly, for the sake of Internet history, the original site has been gone for quite awhile. I see someone else has renewed it with currently safe content. I'm sure you can still find the original image. I, myself, would never look for it again. :)
update: corrected a stupid typo that's too embarrassing to name.
