My biggest secret would be the incest experiences I've had with my very cute younger blonde cousin, she and I would play games as children, young as me 12 and she 7, where I would play hide and seek, hide with her and dry hump her softly in a closet without her knowing it was at all sexual...as years went on and we started to cuddle watching tv I would slowly caress and touch her ass and tight virgin pussy and her perfect developing big tities.
Now she's 20 and for the last 5 years whenever she comes to visit we take advantage of every minute we have alone. She's the greatest fuck and best cocksucker I've ever experienced. She's also an absolute freak and will be used as my slave doing whatever I ask. I have no shame, however my secrets and experiences are worth anonymously sharing... 

This year we hadn't seen each other in over 2yrs and I had lots planned... The first chance we got and she was licking my balls and deepthroating my cock in the car on ride home from airport.
I stuck my finger in her ass while she blew me for a solid 45min car ride home. She always swallows, such a good girl. When we got home and found out the place was to ourselves she quickly stripped standing completely naked in my kitchen. I was rock hard again instantly when she asked if we could go to the shower.
I chased her little ass up the stairs spanking her hard as I could and get her pussy dripping wet begging for my large & hard cock. I know how she loves it rough, and wants my hands gripping her throat while she gasps for air with my cock down it. When we got in the shower, she got down on her knees and asked, "don't you have to pee?" I said "maybe..." and with that she grabbed my balls as hard as she could, opened her mouth wide with a smile and begged, piss in my mouth, she said.
Never having done that before I felt alittle nervous and asked, "are you sure?" Shaking her head up and down she said, "I want to taste everything that comes out of you. It would make me so happy" Hardly believing what I was hearing I stopped thinking, pushed myself to forcibly pee while rock hard, and before I knew it my cock was halfway down her throat and with a big moan I released.
Piss squirting down out her filled up cheeks I could feel the inside of her mouth trying to swallow it down, she gaged and piss exploded all out of around my cock in her mouth like a thirsty bitch drinking from a gardenhose. Quickly she turned around, still on her knees, pushed her face towards the drain and her big ass straight up in the air, spread ass cheeks so I could see her gaping little pussy and perfect tight virgin asshole, then I continued my long glorious piss all over her body.

After relieving myself of the 3 beers I drank during my wait for her flight to get in at the airport, she bluntly screamed, "just please fuck me already! i want your cock so bad" continuous pleading but I wouldn't satisfy her just yet. I crouched down behind her, licking her pussy and ass while grabbing her huge tits,rubbing her nipples and squeezing hard as I could. She moans and I feel her whole body shaking, my mouth darting from her pussy to ass, sticking just an couple inches of my tounge inside both holes... 
Then I couldn't take it anymore, I stood up, picked her up off the shower floor, lofted her in the air and shoved my swelled 7inches as hard and deep as I could. She started screaming and pleading, the thing I love most, screaming "no! Please stop! Don't! Please ! I won't tell anyone!" begs and pleads me not too but I continued drilling it deep as possible feeling her tight pussy stretch and squeeze around me, her muscles stretching, loving every moment of incest rape role play. She came quick, squirting all over my cock while deep inside her. I think she pee'd herself alittle.

I hadn't cum yet because she'd sucked it all outta me on the drive home. She asked me what she could do to taste it again. I grabbed her hand and placed it cupping my balls ever so right with her 3 middle fingers placed right to my asshole. Looking her in her perfect blue eyes and soaking wet face I ordered her, "...push them in." She shook her head yes obediently and with a quick swift her mouth swallowed and deep throated all 7inches, her fingers shoved deep in my ass. That did it! My hole clenched and my cum shot fast hard and big load it felt like a vaccum had just sucked it all out, and she wouldn't stop sucking, hard and fast, fingers squiggling around in my asshole, balls smooshed in the palm of her hand, my toes found the way to her pussy and in went my big toe. After about 10mins of her playing with my ass until I was completely drained she dipped both balls into her mouth and massaged with her tounge, my cock softened on her face and she smiled looks up and asks, again? let's go to the bedroom now?

And it continues.... I shall continue the stories. there are many more to cum ;) I have many, many bad secrets.