I wake up on Monday morning 8 AM for yet another long day of school. I lay awake in bed thinking of the homework that I had completely forgotten to do and Mr. Peterson was surely going to give me detention for that.
Dammit, I shouldn't have spent all the weekend playing CS:GO.
I am 18 years old and I live with my elder sister, who is 19 and my parents. We live in a two storey house in a pleasant neighborhood of New South-Ham. My parents room is on the ground floor, while me and my sister live on the first. We have our separate rooms but a common bathroom.
Anyways, I get out of bed and make my way to the bathroom. Usually, I wake up late and I have to take a rapid fast shower, so as to not be late for school. But today I had woken up early and there was some spare time. So, like all normal teenage boys I decide to masturbate.
I am standing naked in the shower area, thinking about Jessica's bulging boobs (she is a hot girl from school). Just imagining her boobs stick out through the school uniform gives me a hard on. My penis was achingly hard and I slowly start stroking it. At 18, I had an almost 6" long, slightly curved penis.
I noticed some movement from the corner of my right eye. I turned my head to face the bathroom door, my left hand still holding my penis. And I saw a figure standing in the doorway. My elder sister had walked in on me masturbating!
Shit! I should have locked the door.
I tried to cover my naked body with a nearby towel but the look on her face said it all. She had seen me and knew exactly what I was doing.
Both of us were embarrassed. My sister was awkwardly standing at the door wearing a loose t-shirt and leggings, staring at the bathroom floor, not sure what to say. I was hoping she would leave but she just stood there. I had covered my penis with the towel but the bulge was still showing and it refused to subside.
Not sure what to say, I speak in a small voice, "Please don't tell Mom and Dad about what you just saw."
My sister finally recovering from the initial shock, says "Of course not! I am totally cool about this."
Both of us awkwardly stare at each other. Me and my sister used to be really close when we were small, but had grown apart in the past few years. We used to spend a lot of time together but now both of us had gotten busy with school and hanging out with her felt weird nowadays.
"Hey, since we are both getting later for school, want to get in the shower together? That way we can save some time and water.", she asks casually.