**Disclaimer: All characters in this story are 18 and older. This is purely a work of fantasy and anyone offended should exit this story asap.**
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I awoke the morning after my birthday beside my dad, still hopelessly asleep and snoring away like a cave man from the ancient times. I got up and went to the mirror, admiring my own figure as I had a nice hourglass shape with long curly black hair that reached to my back. My breasts were kinda small though at only a C cup. Though like my mom I have purplish blue eyes that set themselves apart from the rest of my face which was slender yet cute. No wonder dad couldn't keep his cock out of me, I thought to myself with an impish smile. Then, when I heard no arguing as is the norm with the twins this early in the morning I got dressed in the same short blue skirt and white blouse as I wore yesterday and headed downstairs to check on them.
"Aidek? Ana? Are you two in here?" I called into the kitchen as I got closer. Though no answer came back she definitely heard something. A whisper? No... More like a.. moan??? I had to see what was going on so I quietly sneaked into the kitchen which was entirely wooden. Every piece of furniture, counter, and cabinet was hand made by our father. The same father whose seed now resided inside me. And it was empty. Though the door to the patio was cracked and through it I could hear soft moans and cries of pleasure, I got close to the door and watched through the crack and low and behold the twins, Aidek and Ana were having sex on the wooden bench. Ana looked nearly identical to me except for the fact her hair was brown and her breasts where a couple sizes larger. But Aidek looked like the spitting image of our dad. Just a lot younger.
"Oh fuck yes, Aidek, fuck my pussy!! You never do anything else right but damn you feel soooo huge!!" Ana screamed as Aidek's thick pulsing cock invaded her over and over. My hand unconsciously went to my own slit and found it drenched in my own juices. As I watched them I lost control of my hand and it went about its dutiful work.