PARENTS/FACEBOOK/BLOCK!!!!!?

I hate this.... So i am not that old... say around 13. So do you people expect that i use 100% clean language? I say a swear once on facebook and my dad comes in all " I will take ur computer away if this happens again" so i changed my privacy settings so that mutual friends can't see my profile... but he told me it was another family member complaint! I have my mom but... she doesn;t care!!!! My question is do you people really find this surprising??!