Oral sex TMI!!

I really want my partner someday to eat me out. I have fantasies about it. My family however is very conservative and my parents only believe in one way of sex( man is on top and women is on bottom). I don't agree with them but I don't think its worth arguing about it if its my life. I also don't know if I am bi or not but again I can't say anything since they are so conservative. What should I do? Should I tell them these things or just live my life. I'm 17 BTW almost 18 soon yay!