I just can't help it. I have a thing for my Big sister. I constantly jerk off to thought of her huge boobs. Luckily, the other day I happened to catch her masturbating on the couch. At first she was a little freaked out when she saw me, but after I told her how much I wanted to touch her tits, she relaxed and opened up to me. And guess what? I finally got to see her TaTas up close and personal.When we were done messing around and hooking up. Me and my sis both agreed not to tell our parents. Maybe next time she'll let me finger her asshole with my penis. You never know. Fingers crossed.