Taboo fetishes: Do you have any? What do you consider taboo?

First, let's not split hairs over what is and isn't a fetish. If you consider yourself very into somethingets call that a fetish for the sake of this particular conversation. So like if someone asks you "boobs or ass" and you says "ass" that's not a fetish, but if you think You're into ass more than the average person then let's say that's a fetish. I think some folks may define it as being extremely into something and only that thing. Let's not use that definition for this thread. It's fine if you disagree about how I'm using the term, I just want to be clear about what I mean when I use it here.

The other night I was with friends and someone said they know folks with fetishes that "not even the CIA could get them to admit to" so I'm expecting them to say something horrifying. One of the next things they said was "I don't know anyone with a foot fetish who isn't straight." To be fair, it wasn't necessarily them saying a foot fetish is something that warranted keeping a secret even under a CIA interrogation (I know it is a figure of speech, but still I'd expect something disgusting like scat). After they said that I joking was like "yeah totally, me neither, I don't know anyone into feet" thinking it was obvious I was saying I was into feet. They didn't really pick up on it.

So eventually they got that I was saying I was and I explained it. It feels like the "Joker meme" where it's like "someone says they're really into boobs or ass and nobody bats an eye, say you're into feet and everybody loses their goddamn mind." I explained how it feels weird to be able to comment on cleavage looking good or tight jeans looking good but how is that any different than saying shoes make a foot look sexy?

They asked me why I think people want to hide foot stuff specifically. I have a good answer because I specifically am not into all foot things. A lot of foot fetish stuff you see out there is like "dirty feet" stuff. Like a degrading "I'm making you lick my sweaty toes I haven't washed." And while I like some dom sub stuff, to me that's just gross. The same way I would want to wash my dick if I knew someone was going to suck it. I don't think folks are wrong for that, it's just not what I'm into. And to me that's a very gross kink (no offense). So for me I don't want people to think I'm into that. In addition, a lot of people just view feet as always dirty. Because honestly they usually are, they're not wrong.

But it got me thinking -- having someone sit on your face feels very in vogue right now. It's talked about a lot in horny memes. It's odd to me that folks view that as more okay. You're close to an asshole. A pretty nasty body part. When people say they like ass they usually don't mean assholes, but yet face sitting's Overton window seems to be shifting to be more acceptable to talk about. But it feels like telling someone "I want someone to step on me" which is extremely similar to "sit on my face" feels way more taboo. People joke about both but it seems folks are more serious about the face sit one.

So my question is, what are some taboo fetishes you have and where do you think the line of taboo is?

To me someone face sitting feels just as kinky of a fetish as wanting to be stepped on or given a foot job but for whatever reason feels way less taboo.