A Family Secret

I parked my car in the garage and walked around the house, looking for the spot in the garden where I had first discovered Sam.

The slug had been slowly crawling next to the house, in the middle of the grass. A better look revealed that it wasn't far from the basement window, and indeed, faint traces of shiny slime were visible on the pebbles next to it. The window was broken.

I crouched and tried looking through but could not distinguish anything in the dark room.

"Dad..." I whispered.

I was about to try to access the basement from inside the house when I noticed a second line of slime going in a different direction.

I froze. A second line? A second slug? Shit!

I followed it, losing it from time to time. It had been a few days already, but I still managed to track it over almost thirty feet until it vanished below our fence and into Emily's parent's property.

The vision of my crush pulling Adam by the dick returned unbidden to my mind.

"Fuuuuck!" I exclaimed. "FUCK FUCK FUCK!"

I remained frozen for a moment, wondering what to do. I wasn't about to confront her. If she had a slug, just like me, at least she probably had no idea I had one, too. What reason would she have to mess with me? If I had not caught her attention back in high school, I certainly wouldn't catch it now. Sure, this was a potential problem, but it was a problem for another time.

I walked back inside and found Jenny cooking herself some dinner. I barely acknowledged her and went straight to the basement door.

As expected, the huge metal door was closed, a half-disassembled keypad dangling next to it.

After my father's **** five years ago, my step-father and I had tried opening it without much success. The secret basement was now a family legend. The outside window was too small to get through, and the inside door was reinforced. We had talked about knocking down a wall to get in but had been too lazy to actually do it. Our curiosity was not strong enough to justify breaking half the first floor to satisfy it. The best we could do was to look through the window, lighting the dark room with our phones. As expected, it looked like a messy lab. After all, my father was a scientist.

I smacked myself out of frustration.

"A fucking scientist!" I grumbled.

"Did you say something?" Jenny asked from the kitchen.

"Yeah!" I shouted back. "Get naked and masturbate in the kitchen until I tell you to stop!"

"Oh, common!" I heard her reply with an exasperated sigh.

It didn't matter; I knew she would do as she was told.

I looked at the keypad. I needed to think. I needed to get in and find out for myself, once and for all.

I had tried a thousand combinations over the years without any luck.

I heard Jenny moan in the kitchen and felt my dick twitch uncomfortably under my jeans.

I paced up and down the hallway, thinking furiously.

Finally, tired of it, I walked to the kitchen, where I found my step-sister sitting on the counter, in the nude, rubbing herself.

She shot me an annoyed glance but did not stop.

"You're such a..." she mumbled.

"A pervert, I know," I interrupted her with a wicked grin.

Damn, it felt good being free of guilt! I could enjoy the show and do whatever I wanted for her.

The sexy red hair was getting sweaty. Her freckled face was turning red, and her huge tits were bouncing with each motion she made. She was so fucking perfect, and she was mine!

"Jenny," I called her.

"W-What?"

"Stop masturbating. Go to my room, get the lube on my desk, and come back here."

"Simon, for fuck's sake!" She protested as she removed her fingers from her dripping cunt. "I have things to do!"

"Yep," I confirmed. "You are going to take care of my dick."

"Gross!" She exclaimed with a disgusted expression, but she was already on her way to my bedroom.

She came back a minute later and handed me the lube.

"What now?" she asked, crossing her arms and squeezing her huge boobs in the process.

"Give me a titjob!" I ordered, letting myself fall on a chair and removing my pants.

"You really, really, really need to get yourself a girlfriend," she said, opening the bottle and emptying some of its content on her naked tits before kneeling in front of me.

"So you keep saying," I said with a smile. "About that. Don't you have some hot friends you could introduce to me?"

She moved her chest closer and pressed her tits around my hard-on. I gasped softly as she began moving them up and down slowly. Her breasts were so soft and warm. I still couldn't get used to it after years of lusting after her.

"What makes you think they'd want to date a dork like you?" she asked with a giggle.

"Oh, I suspect they would be more than happy to."

I stared at Jenny as she kept stroking my cock with her tits. She was once more acting like everything was perfectly normal or annoying at worst.

"In your dreams, bro!" She replied with a snort.

"Could you... Oh god, yes... make a list of the hottest girls you know with pictures and everything and give it to me?" I asked.

She sighed but nodded.

"Sure..."

"Thanks, sis!"

She shook her head like she was agreeing to something stupid, knowing full well that it had no chance of success. She was dead wrong. There wasn't a girl in the world my little slug couldn't play with.

I closed my eyes and let myself enjoy the feeling of having Jenny's big melons wrapped tightly around me.

Soon, I felt myself approaching climax, and I opened my mouth wide to groan loudly. My balls tightened, and cum spurted between her tits and on her pretty face.

"Ewww!" She cried in disgust. "That's nasty!"

"Drink and lick it all!" I ordered. "And act like it's the most delicious thing you've ever tasted."

She groaned and used her finger to wipe off some cum from her skin and toward her mouth. As soon as her finger passed her lips, she moaned and smiled.

I watched as she scooped as much cum as she could and repeated the process. She wasn't a good actress, but she certainly did her best to convince me, and that was enough to make me grin like a madman.

"Done!" She finally exclaimed. "Happy now?"

"Very happy!" I answered, still grinning like an idiot.

"Can I go now? I need to work on your stupid list."

"Sure, sis!"

She stood up and walked straight to her bedroom. I watched her tits bounce as she climbed the stairs and disappeared.

I took some paper towels and wiped myself clean before pulling my pants back up.

Soon, I was back in front of the basement door.

I stared at the handle and, without thinking, grabbed it and pushed it down. And just like that, the door opened.