It refers to some old forum signature iirc. I saw an explanation of it in some other Lemmy thread some time ago, though I don’t exactly remember where or when.
Sorry for off-topic, but why do your comments end in a license link?
pirat@lemmy.world 8 months ago
walden@sub.wetshaving.social 8 months ago
I think they do it to be funny (I hope). Like making fun of the folks on Facebook who write stuff like “I hearby declare that all of my posts are my property and can’t be harvested for data” or whatever.