I once knew a guy whose fetish was women with faces on their crotches instead of vaginas. He was really, really into that. Like, exclusively into that. Normal women didn't interest him because they didn't have crotch faces. We were on the same forum (which had nothing to do with crotch-faced mutant women) and he'd PM me pictures he drew of women with crotch faces because I was nice to him in one thread before I realized that he's a fucking nutcase. He'd photoshop faces onto the crotches of anime girls. I never responded, but he kept sending them. This forum had no block function so I just periodically had to delete his weird PMs until he got banned from the forum for having a meltdown because the mod gave special custom titles to a few people and he didn't get one.
Needless to say that fetish still baffles me. I wonder if he's still out there, drawing crotch-faced women.