Where does the period blood and uterine material come from?
I know this was a rhetorical question, bellinisurge, but there are places on the internet such as reddit's r/ttotm where menstrual fetishists or "menophiles" can buy used menstrual pads & tampons, as well as blood-stained panties.
Elsewhere online, particularly on Tumblr before it got rid of adult content, are/were tons of blogs in which men - including many who identify as women - describe in elaborate detail how they get used pads & tampons from the waste receptacles in ladies & unisex loos used by the public, at work & in private homes. Some of these guys merely sniff & lick these items while wanking, whereas others wear the pads or insert the tampons (up their bums presumably) - which of course makes them cum even more explosively.
In this account i.imgur.com/NCtP3wh.jpg one trans woman reports on her great week: "first I found a used tampon and worn (sic) it off and on for a couple of days...then yesterday I found at used pad in a unisex bath at wendys. when I opened it up it was a big one and very full and moist. I put it on soon after and wooooooooow what a thrill... can't wait to find more"
Some menophiles who work in commercial establishments like gas stations & restaurants with unisex toilets reveal they are careful to check the waste receptacles for used menstrual products each time they notice an attractive girl or women has used the loo. This way they get the extra kick of involving a real female in their kink without her knowledge or consent. On reddit, one commenter remarked, "it doesn't harm anyone. Just make sure you don't get caught :D"
Gallus Mag had quite a lot about these guys on GenderTrender, but alas it's been taken down.
But the long & short of it is, seems Jonathan Yaniv is not unique or even all that unusual in his pad & tampon fetish. Yes, that's him in the above photo taking a smirking selfie inside a ladies loo, which sackrifice posted yesterday on this thread about him:
www.mumsnet.com/Talk/womens_rights/3456835-We-NEED-to-speak-out-about-this-person