[All characters in this story are over 18.]
Mom leaned over and kissed me on the cheek. 'Are you sure you don't want to come with me to Grandma's?' She unconsciously glanced over at my stepdad and then back at me.
I knew what she was thinking. She hadn't been married to Steve for long, and although we had always been friendly enough with one another, she could tell there was a kind of tension between us. We didn't seem to have much in common: Steve was a guy's guy, into sports and barbecuing and working outdoors. I was quiet and petite and bookish, and liked to take care of my appearance. Steve had even teased me about it, making fun of my girlish looks. This would be the first time we had spent a whole weekend without her, and I could see that she was still wondering whether she was doing the right thing in leaving us alone.
'It's ok, Mom. We'll be fine. Don't worry about us.'
On cue, Steve moved next to me and put a hand on my shoulder. 'He's right, honey, we'll be fine. Maybe we'll even have fun without you!'
Mom put an arm around each of us. 'Oh, my two boys. I know you don't want me to worry. You both be good for me, ok?' We both nodded and she picked up her case and walked out to the car. Steve glanced at me and I felt a thrill of excitement run through my body, then he followed her out. I watched for a moment and then went to the foot of the stairs. As soon as I heard the car door open and close I undid the cotton bathrobe I was wearing and let it slip to the floor. Underneath I was wearing a pair of silky panties and a tiny bikini top. I climbed the stairs and went to my room, looking out from behind my curtains to see Steve talking to my mom through the open driver's window. She waved at him one last time and then started the car and drove out of the driveway.
I sat down on the edge of my bed, facing the door as I listened intently to the sounds from downstairs. I heard the front door close, then footsteps that stopped at the bottom of the stairs.
'Where are you, babydoll?'
'I'm upstairs, Daddy', I called back.
Before I knew it he was standing in my open doorway. I looked up at him with my big brown eyes as he took in the view. As he walked in I could see his shorts were already bulging at the front. He bent over me and I lifted my face to kiss him.
'I thought she'd never leave, sweetheart,' he whispered. 'I thought she was gonna drag you along to see your grandma.'
I kissed him again, sucking gently at his lower lip. 'Well she's gone now, Daddy. And you have me all to yourself until Monday.' I slid my slender hands up his thighs, moving over the now throbbing bulge in his shorts, my fingers feeling for the thick shaft through the fabric.
He straightened up, pulling his t-shirt off to reveal his strong, hairy body. I moved my hands up over his chest, my fingertips lingering over his nipples, flicking them gently as I leaned forward to kiss his taut belly. He moaned softly. 'Oh god, you really know what a man needs, babydoll.'
I kept kissing his belly as I hooked my thumbs in the waistband of his shorts and briefs, then pulled them down all in one go. His meaty uncut cock sprang out, not quite fully hard but already thick and pulsing. I reached out and curled my hand around it, eliciting a groan from Daddy as his dick twitched in response to my touch. I looked up at him again, our eyes meeting as I gently tugged on his cock, my fingertips working his foreskin back and forth over the swollen tip. Within a few strokes he was fully hard, seven inches of thick veiny dick throbbing in my hand. It looked like he was about to shoot his load there and then.
'I don't think you've cum all week, have you Daddy?'
No, babydoll. Not since Sunday.' I smiled as I got a flashback to the previous weekend: Me kneeling on the bathroom floor, lips stretched around the base of his cock as it squirted down my throat. I could feel the cool breeze from the open window and from down below could hear Mom's friends talking and laughing in the yard as Daddy moaned and filled my belly with his seed.
'Your poor balls must be about to burst, Daddy', I teased as I worked his cock slowly and gently, letting my fingers slide smoothly along the whole length of his shaft, then gripping him a little more firmly as I began to jerk him off. 'Well I guess if Mom isn't going to take care of you then I'll have to do it.'
As I pumped his cock Daddy reached out to rest his hands on my slim shoulders, then traced his fingers down. I moaned softly as his fingertips teased my nipples through my bikini top. It was tiny, just two triangles of fabric covering my little sissy tits.
Daddy liked to talk about my flat chest, but it wasn't completely flat. There was just enough flesh for him to squeeze, and to jiggle when I rode his big dick. 'Let's get that off you, honey' he said as he slipped the straps off my shoulders. I let go of his cock to unhook the clasp, then let him slide it off completely and toss it in the corner. He pinched and squeezed my small tits, then started rubbing my stiff nipples again, tugging gently on them, rolling them between his fingers as I let out a girly little moan for him.
His thick cock was pressing against my chest, precum oozing from his swollen cockhead and trickling down my belly. I took him in my hand again, slowly and rhythmically pumping his huge hard cock, letting the tip rub against my soft skin as my Daddy teased and pinched my aching nipples.
