How can I tell my parents i post on /lounge/

I am really into /lounge/. I am 13, and have liked it for about a year (ish). this whole time i have hid it from my parents. I have no idea what they would say do or tjink about me considering im the eldest of three kids in the family. i like SFBE, RedCream, tsknigger, Futuripastica. i would really like for my parents to know who i am and what i like but i dont know how i should do that. any opinions and maybe some advice?