There's one thing that caused everything to happen in the week of my birthday; curiosity. I've always been curios. That's why I did everything. And the last day of the week, my 12th birthday, is when things reached a climax. The story starts on day one.

I did a lot of snooping around. Like I said, I'm curious. I was 11, so that wasn't unusual. I spied on my brother a lot. Listened in on his phone calls, that kind of stuff. He was 16, five years older than me. And he had girls over sometimes. He tried to be private, but I'm sneaky. So most of the time I would catch them kissing and things like that, nothing I haven't seen in movies. But the day he brought Julie over, day one, was something new.

Julie had long blonde hair and wore an outfit that showed off her body. Lowcut shorts and a skimpy tanktop. My parents would kill me if I wore something like that. But anyway, she and my brother were making out in his room. I watched through the keyhole, which was big enough to get a good look. Then she put her hand on his crotch and started rubbing. Never saw that before. And then they stopped kissing and she got on her knees in front of him, undoing his jeans and then pulling them down to his ankles. That was the first time I saw my brother's "dick", as they called it. It was kind of big and pointed up at the ceiling. Julie put her lips around the head of it and took it in her mouth. That seemed kind of weird to me, but it got me thinking.

Is that what you're suppose to do with it? Does it taste good? Is it fun doing that? I just had to know the answer to all of these. My brother was moaning with pleasure. It clearly felt good for him. And then she took it out of her mouth and spit on it, smiled at him, and started slapping it against her tongue. Maybe she did like it.

"Keep sucking on it, babe." My brother said.

She went back down on him, putting it in her mouth. So she was sucking on it? Like I would on candy? Does dick taste like candy? Again, I had to know. But I didn't know how I'd begin to find out about these things. I guess I'd have to suck a dick. But who's? I didn't have any friends that were boys and my parents didn't let me around strangers. The answer was staring me in the face. Who better than my brother? Even if I did it wrong, he'd show me how to do it right.

"I'm about to cum, Julie!"

What's "cum"? Sounds weird to me. I just watched with growing curiosity as he moaned and groaned and was in a state of great pleasure as Julie kept sucking. Then he slouched back on the couch and sighed. Julie lifted her head off his dick and a bunch of white gooey stuff came pouring out of her mouth and onto his crotch. Is that what they call cum? She smiled and laughed before she slurped it all up from his crotch. So you're suppose to eat it? Then why did she play with it first? Is that fun? Does it taste good? I just gotta know.

I sneakily crept out to the hall and into my room. I stared at myself in the mirror. I liked my dark brown hair, and how long it was. Maybe I needed a haircut. And my white buttoned shirt wasn't as skimpy as Julie's tank top, probably for the best. My jean skirt and leggings underneath were cute, though. I made a kissy face and studied my lips. Could they be dick-sucking material? I waited in there until I heard his door open. I listened to footsteps as Julie snuck out through the back door and he went back to his room. I couldn't miss my chance so I went out of my room and straight to his. I knocked on the door quickly then entered without waiting for permission. I was too anxious. I closed the door behind me and, since he couldn't see it behind my back, pushed the little knob to lock it.

"Yeah? What do you want?" He asked.

I went and sat on the couch exactly where Julie was. I was looking up at him, thinking of what to say.

"You know how you have girls over sometimes?" I said.

"Uh.. No I don't." He lied so nervously.

"C'mon Ben, I know you do! I've seen them."

"What? Seen them?"

"Yeah. I spy on you guys kissing in here sometimes." I decided to get all of the truth out.

"Oh god.." He sat down next to me on the couch.

"I was just curious.." I shyly said.

"About what? You know what kissing is, don't you?"

"Yeah, but I get curious to see what else you'll do. Like today."

"You spied on me today?!" He was even more nervous.

"Yes.. What were you doing? With Julie?"

"Um.. What did you see?"

"She put that in her mouth." I pointed at his crotch, where his dick would be if it wasn't in his pants.

He was just staring at me, so nervous I could see him sweating.

"Isn't that called sucking dick? It was your dick and she was sucking on it, right?" I asked.

He still couldn't find the words to say, so I had to encourage him.

"C'mon, I just wanna know!" I said.

"Are you gonna tell mom and dad?" He asked.

I shook my head.

"She was giving me a blowjob. That's when a girl sucks a boy's dick, okay?"

"What's it like? Does it feel good?"

"Yeah.. Why are you asking me, though?"

"Cause I wanna know. I'm curious, and you know more than me!"

"What do you wanna know?"

"If it's fun to suck dick, if it tastes good, and.."

"I can't tell you that." He interrupted. "I don't know that stuff, you have to find out yourself."

"So, can you help me? I really wanna know!"

"What do you mean?"

"Can I suck your dick?" I looked up at him.

He just looked at me without saying anything. I had to convince him before he said no.

"Please? I really wanna try it and I don't have anyone but you. Pretty please, Ben?" A bulge in his pants was growing.

"But you're my sister.."

"So what? Julie did it. You just want me to try it with strangers? I just think it should be you cause I trust you.." I started to get shy again.

The bulge in his pants was now a full tent. I think he was liking the idea, so I decided to try what Julie did. I put my hand on his crotch and rubbed. He didn't try to stop me at all.

"Okay, fine." He gave in. "Get on your knees."

I got off the couch and onto my knees in front of him. He unbuttoned, unzipped, and pulled his pants and underwear down to his ankles. His dick sprung out, looking just like it did when Julie was about to slobber all over it. I got comfy in between his thighs and was about to put my mouth on it when he spoke.

"But don't use teeth. And don't tell anyone. Just put it in your mouth and start sucking."

I giggled then went for it. I opened my mouth wide and got the head in my mouth right away. I think I liked the taste. It was unfamiliar, but wasn't bad. I wanted more, so my head started lowering, taking more of my brother's dick in my mouth. I started to moan quietly as my tongue explored every inch of his shaft. I was licking it all over while it was in my mouth, like I imagined Julie did. I knew he was enjoying it. And I think I liked it too. Sucking dick really was fun. I pulled it out of my mouth and spit on it, just like Julie did.

"Am I as good as Julie?" I smiled.

"If you can fit the whole thing in your mouth then you are."

I couldn't imagine fitting the whole thing in my mouth, but then again I liked a challenge. I went down on it again, getting half in as a starter this time. I went deeper and deeper, sucking and massaging his shaft with my tongue, until I felt the head reach my throat. But that didn't stop me. I went further, letting his dick slide down my throat, and I started to gag a little bit. But I kept going until my lips were touching his crotch. I did it! I heard him give a big moan as I started moving my head up, his dick exiting my throat. I had it covered in my spit. I went back down and fit the whole thing in my mouth a second time, gagging on it while it found its way to my throat.

"Let me help." He said.

He held my head with his hands as he got up off the couch, never letting his dick out of my mouth and throat. Then he started humping my face, sliding his dick in and out of my throat. I was gagging with each movement. It made my eyes water, and hurt a little, but I liked it. Bet Julie can't do that. I was drooling out of my mouth, letting it spill all over my outfit. Pretty soon I was soaked in my own spit. My tongue was hanging out of my mouth but it still felt the whole length of his dick being shoved in and out of my mouth. He was pumping my throat roughly.

"I'm gonna cum, you ready, Cally?" He said while almost panting.

Now I get to know what cum really is. That white stuff Julie played with. I had to know if you're suppose to eat it, if it tasted good, and if it's fun to play with it. I just looked up at him and nodded, trying to smile with his dick in my mouth, partially lodged down my throat. He pulled it out of my mouth and grabbed it with his right hand, jerking off while tilting my head back with the other hand. I only had a second to be confused before he shot a string of that white gooey stuff across my face. Then another, and another. It covers my face, cheeks, forehead, nose, and chin. I kept my eyes open the whole time. It was so warm. It felt really good on my face. He sprayed the last of it on my lips and slapped them too before he was done.

"Julie never let me do that." He grinned.

"I like it!" I smiled.

I pinched a glob of cum from my face and lifted it into the air, then let it fall back onto my upper lip. Playing with it was fun. And maybe it wasn't just for eating, maybe I could do whatever I wanted with it. But I still wanted to know how it tastes. I opened my mouth and pushed the cum all over my face into my mouth with both hands. I got a bunch of it in my mouth. It was a little salty at first, but then it tastes sweet. I liked it. I was licking my fingers and chin.

"You like tasting cum?" Ben asked.

"Mhm! Tastes like candy!" I giggled.

He handed me a towel. I saw that his pants were back on now.

"Clean yourself up, you can't let anyone see that." He said.

"I wanted you to cum in my mouth, like how you did with Julie." I stared at him.

"Maybe next time, Cally." He laughed.

Next time. The sound of that made me curious.