It was summer and my parents took their annual vacation with each other, this time they're spending a month in the Caribbean, which left my younger sister and I at home and me in charge for the month.
I'm 21 6'2" and basically run the high school, I'm quarterback on the football team and have a pretty killer six-pack. My sister, Ally short for Allison, is 18 5'4" and she has a pretty athletic body, long blond hair, and is overall very attractive. She's a typical teenage girl with her iPhone and Starbucks, and she also acts like a total bitch sometimes.
We were on the couch watching tv, Ally was lying down on one side and I was sitting on the other. Ally put her feet on my shoulder, I and nudged them off. This repeated a few times and I finally gave up and let her rest her feet on me. This was fairly typical, she'll try to annoy me or see what she can get away with doing to me sometimes, it's what younger siblings do.
After a while she began to rub one of her feet on my face, starting on my cheek then eventually moving around my face until she grabbed my nose between her big toe and second toe. This forced me to turn my face towards her and as she wasn't letting go I had to open my mouth to breath.
I don't know why I didn't move or protest what she was doing, I guess I was just mesmerized by her beautiful size 4 1/2 feet.
After I opened my mouth she moved her foot down from my nose and into my mouth, in a motion so swift and fluid that I hardly had any time to react.
She said, "Suck!" And I began to suck on the first part of her foot and at the same time moved my tongue around and between each toe.
"Did I say to do that with your tongue?" she asked. I began to stop, then she not to stop anything unless she said I could. So I continued to lick and suck her foot.
While I was doing so, she started to move her foot just so that I was forced to get off the couch and stay on my hands and knees in order to continue sucking her foot.
Ally then pushed me onto my back with my face under her feet, and she then pulled her foot out of my mouth, but I kept licking. She hadn't said to stop so I just kept licking her sole, then the heel, and continued all over her foot. While I did this, Ally sat back and watched tv. The only work she put into the whole ordeal was switching the foot over my mouth every once in a while.
This kept up for a few hours until my sister lifted her foot off my face and I began to follow after it with my tongue, but she put her foot on my stomach stopping me from doing so. She looked at my crotch and remarked, "Well, looks like somebody is pretty excited to be under my feet." I blushed realizing I had a blatant hard on. "From now on" she continued, "you will do whatever I say no matter what it is, you will call me goddess from now on, and furthermore you will be my loyal slave whenever mom and dad aren't here"
I wasn't in any position to argue with her considering she could always just go and tell everyone about what happened just now, so I nodded and said "yes goddess."
She giggled at the fact that I was now completely subservient to her, and then she commanded me to strip naked in front of her. I did, and blushed again as she laughed at how small my dick was, only 6 inches while fully erect.