Is it normal that i spank my sister?
Since we were about 14 years old, I would spank my sister hard whenever we disagreed on something, I'd tape her wrists to a chair, pull down her panties and slap her ass hard with my hand, then she would cry hysterically and I would hug her before sucking her neck. Recently, she came to visit me in my dorm and I couldn't stop slapping her ass just because, I bent her over the table and slapped my cock on it then started unzipping her, she resisted and we fell to the ground. I pinned her down and bit her nose. She punched me on the side of my face and I fell off then she kicked me in the chest and bolted off. The whole thing made me cum my pants. It's a fetish or something. I'm I insane?