*This is not a real story. None of these characters are real. Please enjoy!*
I never really liked my step sister Elizabeth. She was extremely shallow, and she only seemed to speak to me when she wanted something - usually homework help.
When our parents moved our families in together, she ended up with the room right next to me on the 2nd floor. Think of a long hallway, where the stairs led up to a small landing. My dad's room on the left, and our rooms on the right with mine closest to the stairs. We shared a connected washroom.
I didn't realize the perks of my location until a few months down the line, when Elizabeth got more comfortable. I always left my washroom door ajar, and she'd walk into the washroom with a towel or skimpy shorts and a bra before closing my door. I think she just ignored the fact that I could see her.
And why wouldn't she? I was a nerd, essentially invisible to her at school as well, even though we shared the same classes. She didn't have a reason to pay attention when it didn't suit her. Elizabeth was a boob-a-licious cheerleader, and I was a ghoul that lived in her shadow.
And drool over those boobs I did, they were massive and seemed to defy gravity, if her skimpy clothing was any indication.
I decided to be content with my small perv sessions, and got on with my life - whacking off when I could, to the glimpses I got. There was something so taboo about it.
Things stayed this way for months, until one night I heard her talking to someone. At first I thought it was my step-mom, then a friend on the phone, but after a few minutes, I realized she had snuck her boyfriend into her room.
Eventually I heard the bed creak and him groan, telling her to take him deeper. I imagined her giving giving him head. I couldn't do anything except listen.
Slowly took out my dick, imagining I was sawing in and out of her velvety mouth. Her tongue grazing the tip before I forcefully shoved it in deep down her throat. Her cheerful smile dropping as she tried to keep up with my thrusts. Imagining her tears and mascara running made my dick harder if possible.
I came when I heard him groan, as gross as that sounds. I spewed what felt like gallons of cum, way more than my shitty tissue could hold. It was insanely intense, and I realized I needed more.
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I bade my time. Around 2 weeks later, my parents decided to go on a getaway, taking time off work, leaving Thursday night, and coming back Saturday afternoon. I was left in charge as the older one, and I unfortunately "let" Elizabeth walk all over me and throw herself a late birthday party. She had turned 18 in the last month.
I made sure there was a ton of alcohol , and bought a few roofies from this kid at school. This was going to go really well or really poorly.