I am waaaaaaaaaaaaaaaayway kinkier than the very vast majority of the people I know!
In my opinion there are two limits of it, one is the limit of kinkiness, when it is really weird, for example I can't stand the whole thing about knife play and needles, would probably be able to put up with them up to a (veryvery low) level, but I couldn't even look at a picture of such things!!!
The other limit is when kinky becomes literally perverted, and that I consider to be what is not consensual, and what hurts one MUCH MORE (a little more is acceptable in most of the cases, as pushing boundaries, which always has to be done carefully and in a slow and gentle way as much as possible), and most of all, when it is harmful!
One HAS TO pay attention when it comes to safety, because without it you can put the other one into danger, even life threatening danger!!!
But I agree on things done in a different way...
Once W/we had a conversation with my Master, that though He isn't into wanting to be with any other females than me, but He would be totally up to it anytime with the right female, and for now am just not feeling like that (it always changes depending on the circumstances), and no matter what, ultimately it wouldn't be a pleasant experience for me...
So I asked Him that what would happen if He happened to insist let's say, so much that He would order me to be into such a thing (which He would never do but I find it a good idea to talk about sensitive topics ahead in time, so I can already know what could happen, to be ready in mind) - He said that He would do His Best to have me enjoy it, as it would be as much for my pleasure as His, and I asked that what if I would be upset, that I would be all pissed and would want to do some kind of "revenge" on the slut... Well, He wouldn't mind at all if I got kinkier with the female, tying her up against her will and stuff like that, because though it is a crime, but I always tell straight what I intend to do before I go ahead with anyone, and if a slut would still insist, knowing it, then there you go, I would give her a not too harsh but not pleasant at all memory as well to remind her that next time she goes for a female's male and the female isn't entirely happy about it then the female has the right to take something in return! ~lol ~giggles
But it would still not be pleasant for me of course, because revenge doesn't solve anything, but it would straighten things out in some way, it's like disciplining a kid who did a very bad thing, you know what can happen if you offend someone, so you get it as if you had just asked for it... It would be over the limits of acceptable kinkiness, it would still be kinky, it wouldn't be alright, but in some ways it would be acceptable... Now I got into a quillruffly mood just thinking of such a situation, mehhh... ~sighs and growls ^^