I desperately needed to use the bathroom. I always drink a big glass of water before going to bed, and in the mornings, I always wake up with a full bladder. Normally, that’s not a problem, since the house in which I live with my mother and older sister has two bathrooms between the three of us. But the master bath was having plumbing problems. So that left the hall bathroom.
Mom had already gone to work. My nineteen-year-old sister Mandy was in the bathroom, taking her sweet ass time as always. Normally, I wouldn’t care how long it took for my sister to get ready, but today was different.
“Mandy! Come on!” I shouted through the door, dancing on my feet.
“Go pee in the back yard, Charlie!” she shouted back.
I groaned. I was not about to go running out in the back yard and relieve myself when I could hear Mr. Denton’s lawnmower running next door. Our fence is pretty low; I knew he’d be able to see me. I pounded again. “Mandy!”
“You’re just gonna have to wait!” she shouted back. “Or you—”
“Fuck this!” I cursed, and crashed through the door, breaking the lock. Mandy, clad in just her panties, screamed as I stumbled to the toilet beside her. She dropped her eyebrow pencil into the sink and slapped her hands over her tits.
“Damn it, Charlie!” she cried as I jerked down my shorts and aimed my dick at the toilet bowl. My sister stared in shock as I fired a powerful stream of urine into the toilet. I sighed in relief.
Mandy looked dumbfounded, maybe even mesmerized, staring at my pissing dick. I gave her a lopsided look. “Told you I couldn’t wait, Mandy,” I said. I couldn’t help but notice what a nice body my sister had. A little soft in the middle, but her little paunch looked sexy, I thought. And she had adamn nice rack, I realized. C-cups, easily, and her hands did little but cover her nipples. Her long, wavy blonde hair was pushed back from her face by one of those headband-things. I could just make out the shadow of her pubes through the sheer white cotton panties she wore.
Mandy didn’t seem to realize I was checking her out. She appeared occupied with my cock, her eyes wide. “I guess so,” she commented softly, ogling my dick. I had been blessed with a large penis which, even soft, is long and thick. Rumors of my big dick circulated among the girls at school, but I was pretty shy and had thus for only gotten a few hand jobs and one half-assed blow job from Christy Summers.
I finally stopped peeing, shook off the last few drops of piss, then tucked my penis away. Mandy blinked, looking dazed, and turned her head. I noticed her cheeks were red. I wondered what she was thinking about.
I flushed the toilet, washed my hands as my sister got out of the way. I chuckled, looking at Mandy in the mirror as she turned away and grabbed her robe. For a moment, I saw her breasts from the side, noting how stiff and thick her nipples were. And so damn pink! But she closed the robe tight, and stared at me blankly.
I dried my hands, stepped past my sister. “I’ll fix the lock later,” I said. “Sorry I had to do that, sis.”
“I-it’s okay,” she stammered as I left.
Mandy was weird around me all day, giving me these strange looks whenever we saw each other. My sister and I weren’t real close, but we weren’t estranged, either. Even though we aren’t even a year apart in age (she was born in November, and my birthday’s in October; for 36 days each year, my sister and I are the same age), Mandy and I never really hung out. She had her girlfriends, I had my buddies. Even when Mandy briefly dated my friend Teddy, my sister and I didn’t really spend much time together, at least not alone.