Am I bullying my parents?

At 21 years of age if I leave the house without telling them where I am going?? They have behaved very oddly to me in the past couple of years like very inappropriate sense of boundaries, innuendos that have made me very uncomfortable around them. My mother tells me though that I am being a bully by leaving the house without telling her where I am going but surely as an adult I deserve that little bit of freedom? When I do go out without telling her and I come home, she acts pissed off, looks at me with a scowl on her face, very angry. And, I mean I cannot make any friends because I do not have the freedom to make them if I have to check in with my mother all the time. Furthermore, in my home, she calls me an IDIOT or FOOL or things when I make mistakes so it feels not like she is being protective of me that she wants me to let her know everything I do and where I go, but damaging to me. If someone calls me these names and then demands to know where I am, that feels on the contrary like bullying to me?