My older sister is a fat, drunken loser.
She lost another job because of her drinking, got evicted from her apartment and wound up moving back into the trailer with me and our parents. She's sleeping on the couch in the living room and drinking a box of wine every other day.
But it turns out I am worse.
The other night we were watching TV together on the couch. I was sitting at her feet while she sprawled out under a blanket (she insists on keeping the AC running even though it's not even summer yet). It was late and I was rubbing her feet because she'd begged me to and after her 4th or 5th glass of wine and my second (we're talking about a big water glass here) she passed out before the movie ended. The movie had some really hot scenes in it which caused me to pitch a serious tent in the shorts I was wearing and for whatever reason I started to wank my cock right there on the couch with her next to me using the lotion I'd been using to rub her feet.
She moved and I was afraid she was going to wake up and catch me, but she just started snoring lightly. Her movement had pushed her foot against my hard dick! Between the wine and my horny teenage hormones I didn't stop, I put more lotion on my hands and start rubbing her foot some more only this time using my cock as well as my fingers. I remember pressing the head of my cock with my thumb hard against the arch of her foot in slow little circles that was just driving me wild. I wound up cumming on and in between her toes. I didn't have a rag other than the blanket handy so I just massaged my cum and the lotion into her feet.
I sat there wondering what the hell I had just done, I kept idly rubbing her feet and she didn't seem to notice a thing. I tried calling her name softly and then more loudly but she was totally passed out. Between the cum and all the lotion her feet and my hands were completely saturated so I started massaging up her calf to use the excess lotion. At this point she was laying on her back and her knees were splayed apart and her feet in my lap. Apparently I am a real pervert because I kept working my hand slowly up her legs, folding the blanket back just enough so that I could see what I was doing.