I'm 23, my sister is 20. I've been into her for a while, all my friends keep telling me how sexy she looks. She's the average bimbo, big tits, blonde straight hair, big blue eyes. Anyway, tonight she was at home when I came back, and she wasn't supposed to be here. I saw her because the lights of the bathroom was on, through the windows.
So I played like I didn't knew she was here, turned off the alarm of the house, keeping my earphones in, but mute the sound. So I could hear the water falling in the tub. Tha plan was to go in the bathroom like if I needed to pee and see her naked in the bath, but when I opened the door she was on the toilet (right behind the door so I couldn't see a thing by the short time I was in) but she was naked. I apologise, pretending I didn't knew, bla bla bla. She slammed the door at my face.
So I took a look by the lock and saw her magnificient tits. I assume she was reading/watching some porn stuff on her phone, cause she was playing with them a bit. Finally she stood up and went into her bath so I couldn't see a thing. I've jerked off already 3 times picture her tits.
