The joke is that femboys (they wear socks) socks are so thick that not even a snake (the ones biting me in this hypothetical) are not able to reach the skin
In my opinion, gods can be whatever we make them to be, so you can call them furry. I’m more of the opinion that you have to dress up as a animal to be a furry
Barney came out in 91 of course there are a lot more anthro characters before that but if your taking costume mickey would appear as a costume in 70s Disney world commercials and I wouldn't be surprised if there was stuff before that