It's been around for quite a while, but has gotten more visibility thanks to animation. I was first introduced to it back in 2007 by a female FWB. She discovered it just surfing for sites that were poo fetish, which was what she was into, heavily, but her hubby wasn't, hence her coming onto me (she was my neighbor)
I'm very into anal vore and used to role-play it with a military wife who was cheating on her hubby and she introduced me to vore. I was her 'dinner' and it was what's known as 'full digestion' vore, which means the role-play ends when she excretes you out, fully digested. If you or anyone else is curious about anal vore, DM me.
If that could really happen people would disappear off the face of the planet by the minute. Shes not in her stomach swimming around having a good time, she's gone my guy, gone, just to have her body come back out as hot liquid pile! The acid your body would have to make to melt a bitch that fast would have to be so hot that she would have to be nuclear to the point she was radioactive at all times. Idk, I'm good with what we have in real life!