In my down time I like to relax and lay on my bed and watch tv or a movie and many times my step daughter will join me and lay with her head on my stomach or on my thigh and I get aroused as she is very attractive and usually wearing a t-shirt or tank top braless and shorts that are bordering on being a little too small for her. She is only 13 but she's got very full c cups and a very nice body.

I know she notices when I get hard, it would be impossible not to. My cock isn't enormous but I'm not small either. Sometimes she will move her head so she almost has her face resting on it or like last night lay beside me and put her leg across me so that her calf lays on my hard on and I get super arounsed and my cock throbs and twitches. Then she moved and layed on her side across my stomach, bending her elbow and resting her head on her hand. We pretended to watch tv but I'm sure she layed like that so she could just check out my hard on for a while. I was really turned on and I couldnt help my cock twitching.

Anyway, she got up abruptly and went to her room. I looked a minute or two later from my bedroom doorway her bedroom door was open and she was in bed completely under her blanket. Her knees were obviously spread wide open and her hand was between her legs rubbing rhythmically in circles. I stood with my hard on raging in my jeans while she masturbated for several minutes and then she must have cum really hard because her rhythmic movements became jerky and spastic and her legs, knees still spread wide, looked like they started twitching involuntarily and her butt arched up. Then she stopped and lay there.

I closed the door, got back into bed and jerked off and blew a huge load all over my chest and stomach.