It can only really go to ways, you tell your parents they think your sick and need help. Or you tell your parents and they think why the fuck is my kid telling me something I never wanted to know. Stop and think, would you want your mom to tell you about how she blew your father on her knees in a dark ally because they enjoy the risk? Sex lives are personally affairs and It is not exactly socially acceptable to go and tell your family. If you need someone to talk to, talk to a therapist, if you want acceptance, find friend into the scene, it can also help to not feel alone. I knew about this fetish nonsense since I was in fifth grade and have struggled with coming to terms with it as I am sure we all have. In a nut shell if you do it, god speed, but if it goes bad, it could at worst tear your family apart.