I hope you mean if they do it in front of you. Doing kinky things in front of people who don't care to see it sounds like a very specific and not very common fetish. You might be hanging out with kinky people and not even know it because, like most people, they do their sexy time in private.
Expose me to it. Yes. I have friends who do whatever in their private time. But if some character shows up to a house party with some other character on a leash they probably won't get invited back.
This sort of thing is not acceptable in our home.