Oops, wrong girl...

I used to go see this girl occasionally. She would leave the back door open for me, but would tell me to call before I showed up. Usually she was asleep and I'd just crawl into her bed naked and dump a load in her cunt. This one time though, I tried to call but she didn't answer. Since I was already in the neighborhood I just went in her house and headed straight for her room. I did my usual thing and dropped my pants and underwear before I climbed into her bed. I could see that she was asleep, but the covers were over her head. I was so horny from saving my load up for several days. I spent the day at the beach and was watching so many hot girls walk around that I couldn't wait to unload! So, I got into the bed quietly and noticed she was already naked (as usual). I got between her legs and stuffed my cock in her right away. I never felt it so tight before, so I thrust once and then in the second thrust I was cumming in her. I guess I woke her up with that, as she yelped. I unloaded so much cum, so deep and so quickly that I didn't even realize it wasn't her. It was her daughter. Following my release and my grunting and groaning I started to leave when she turned on the lights. That's when I realized it was her daughter, who had a look of shock on her face. I guess that's what she gets for trying to be like her mom.