I roll over in bed and look at the clock. 1:30 AM and I am wide awake. I can’t get comfortable. Even trying to lie on my stomach doesn’t help because my rigid c*** won’t allow it. My d*** is so hard it aches and it is keeping me up. I reach down and grasp the base of my c*** shaft. At 7 inches circumference, I can barely get my fingers to meet around its thickness. I slide the skin and swollen veins over what feels like a 10 inch long tube of steel. Pre-c** oozes out the pee slit in my huge mushroom shaped glans. It is so sensitive the waves of pleasure are almost too intense to bear as I feel it’s slippery shape. I guess I could j******* again. My golf ball sized testicles ache from swelling even though I have already jacked off and squirted fountains of c** 3 times. My c*** just won’t stay soft. Even though I am only 15 I already have a c*** most grown men could only dream of. I live in a small town yet there are quite a few attractive young girls in our local high school and younger girls my sister’s age (11) in our neighborhood. Most of the girls I find attractive are younger girls between my sister’s age and mine. I have already had many s***** encounters with girls from ages 12 to 15. News of my endowment spreads fast in a small town. Most of these girls are “good girls”: sweet innocent church going girls but each and every time they see or touch my throbbing horse d*** they transform into panting, gasping, moaning d*** freaks passionately fondling every inch of my c*** and balls, kissing passionately while rubbing their wet pussies and swollen clits against my leg or arm or hand or my c*** itself. They lick and kiss and s*** my throbbing pole like the dirtiest of whores. Seeing these sweet young girls transformed by my c*** is the main stimulus for my constant erections. But tonight is different. My 12 year old cousin Sheryl is sleeping over with my sister. Sheryl has enjoyed teasing me to see me get hard for a couple of years now. Mom has gone to bed early leaving us kids to stay up watching movies and playing. Sheryl already has some perky little t****** that she proudly displays for me in a very loose fitting sleep top that hangs open revealing all to me. She is also wearing very sheer bikini p****** that clearly show her p**** slit and small patch of the pubic hair she is sprouting. Prior to getting naked for bed, I was only wearing underwear briefs that were doing a very poor job of concealing my stiffening erection. My sister and cousin know all about my big d***. They have peeked at me naked in my room. They have spied on me jacking off. Of course I hear them giggle and it just makes me harder. Sheryl has come in the bathroom more than once while I shower and I will pull back the curtain and chat with her while “washing” my balls and fully erect c***. And they want to see it again tonight and I am dying to show them. So instead of jacking off again I get up and toss my bathrobe on over my naked body (just in case mom wakes up and catches me out of my room as if that would help. The robe hangs open untied and could never conceal my rigid d*** sticking straight out and wobbling around). I walk into my sister’s bedroom. There is a very bright street light outside her window so mom installed a heavy pull down shade that leaves the room almost black. I whispered into the blackness “Are you girls awake?”. I am answered by giggles. My eyes have not quite adjusted to the dark but the girls can clearly make out the shape of me, my open robe and protruding c***. I can see the shape of my sister getting out of bed and walking to the window shade. I know what she is up to so I I step to the window beside her as she lifts the shade enough to peer behind it. A bright shaft of light shines into the room and I step into this spotlight that illuminates me from mid-chest to floor clearly illuminating my extremely aroused condition. I know my sister is not looking out the window but down at the huge c*** inches from her as I ask “Did you hear something outside?”. She doesn’t answer right away. I love playing this game with her giving her plenty of time to admire her brother’s giant d***. “I guess it was nothing” she says. Just before dropping the blind I can see my cousin Sheryl lying in the bed nearest me a few feet away with one arm sticking out from her on her side facing me staring right at my engorged genitalia. The room is black again as I hear my sister get back in bed. I step toward the bed until my leg touches Sheryl’s hand on the inside of my knee. She begins feeling and exploring up the inside of my thigh. The pleasure is intense. When she reaches my low hanging balls she gently plays with them with her fingertips rolling them around in their sack. I gasp with pleasure. She runs her fingers through my pubic hair and tries to encircle the thick base of my cockshaft. Her little fingers can only reach half way around. I can hear the familiar excited breathing. She explores the full 10 inches of my shaft stopping to examine each bulging vein. I reflexively pull back at the intolerable pleasure as she traces the corona of my glans. Precum pours out my pee slit and runs down her arm. I reach down and untie her top and fondled her t****** then feel down her tummy as she pulls her p****** off and opens her legs offering her p**** to me. I almost c** but I break off before I do edging incredibly. I climb into bed between my sister and cousin and both girls begin eagerly playing with my c***. I rub their clits and finger their pussies. All three of us c** several times before we pass out. I wake up in the early hours. We are soaked in c** and p**** juice. I slip out and go back to my bed.