Step-Brother Can't Wait Any Longer...

My step-sis refuses to put any real clothes on while in the house! She is always walking around in just a tank top and underwear, and our parents are always telling her how inappropriate she is being. I also tell her to put more clothes on. I say things like... One day something bad is going to happen to you, cause you walk around like a little slut. I realize that she is my step-sister, but as a guy...I can only take so much of a visual tease before I snap and act on my primal horny urges! So when I came home early from school today, and saw that my little sis was doing laundry half naked (and I knew NO one would be home for a while), I said enough is enough...and I took matters into my own hands! Watch as I slid in behind my unassuming step-sis, covered her mouth before she can say anything...and then pulled down her underwear exposing her juicy bare bottom. Although her body is showing signs of resistance, her soaking wet pussy tells me that she likes her big step-brother playing rough with her. It is time to take what is mine, and pump my meat deep into my step-sis's slutty cunt! She lets out a big moan the moment she feels my hard cock start to fill up her hole. While penetrating her I can feel my nuts swelling up with a huge sticky load. I exploded my warm salty load deep inside my step-sis's swollen pussy. I couldn't help myself.