@i like tea and coffee @pistolero @Eòlach yeah of course it's possible, it's just steganography: https://en.wikipedia.org/wiki/Steganography

It's not any better than posting CP from the perspective of the initial posters (worse, actually, because hiding the picture shows that the poster knows it's bad, the poster can't later claim he thought it was an immature 18-year-old) but from the perspective of the thread-followers, they can claim to have only downloaded sinks for the meme, and only reposted sinks for the meme, without knowing about the hidden payload. 

 Was thinking about just that when I made my previous post. I've been looking into ARGs from a while back and the stuff like Cicada 3301 has you doing stuff like Steganography for clues. 

 @of nothing @Eòlach @pistolero that's gross. And fascinating. I remember searching up pictures of fancy sinks on Google to post, I hope I got lucky and the threads I participated in were as innocuous as they seemed 

 Doubt anyone on 4Chan was sophisticated enough to employ steganography in their images back then. If they were then there would have only been a handful of times where that was the case and somebody was bound to have noticed if it were.