Jasper had come home early from school thinking that he'd have the house to himself. Ever since he'd turned 18 all he could think about was seeing his twin sister naked.
Slipping quietly through the door he started up the stairs to his bedroom, that's when he noticed the basement door was cracked open. Since they were never allowed down there he became curious and decided to sneak down the concrete steps.
Setting his backpack down on the kitchen table Jasper cautiously opened the door. He slipped out of his shoes so not to make any noise. Easing down the steps in the darkness, gently holding onto the railing he made it to the floor below.
He could hear Metallica booming from the far end of the basement where his Dad always kept the door locked. From where he was he could see light spilling out if the room. What was going on in there he wondered?
As he got closer he could hear moans and groans, all the sounds of sex. He stopped for a moment, his Mom was in New York for a conference so he knew his Dad was cheating but with who?
As he got to the door to see who he was with he saw his sister riding their father's cock with wild abandonment. "Oh yes Daddy, make me cum all over your big dick!" He heard her cry out.
Just then their father pulled out and put Jessa on her knees at the edge of the bed. "Whose pussy is this baby girl?" He heard his Dad growl. "It's yours, Daddy, all fucking yours."
Jasper realized then that his 6 1/2 inches was nothing close to their Dad's 8. He was so hard he hurt. He needed to get back upstairs and masturbate to his twin sister's bouncing tits.
Just as he turned around to leave the basement he heard his Dad call out, "Jasper, come in here!" Jasper froze. "Come here now so." His Dad repeated.
Jasper walked into the room suddenly afraid. "Don't be scared son, put your dick in your sister's mouth." Jasper knew as soon as he did he was going to cum hard. Jessa grabbed his pants loose then sucked him into her mouth.
Three strokes and he exploded down her throat. He was going to pull out but his Dad said, "Don't!" Jessa kept sucking him until he was hard again.