As I entered the bedroom they filed in quietly standing around awkwardly until I sat on the edge of the bed, the big vibe dildo still lying on the covers. "Remove all your clothing." I commanded.
They hesitated until I slapped the belt across my palm and they quickly removed their clothes. My daughter's body was lovely, slim, tall with ample breasts and full pointy nipples. My mouth watered to taste them. Her pussy was shaven except for a strip up from the top of her slit. It looked sexy on her and I decided not to make her shave it off. The boy's body was firm and hard from all the athletics in which he was involved and oh my god what a cock. It looked like my wrist and it was only semi hard. He had inherited his father cock and once hard I was sure he might be even bigger than his father.
I crawled up on the bed after pulling off my robe joining the children in their nakedness. They both gasped as sat cross-legged on the bed my cleanly shaven pussy clearly visible to them both. "Okay, now." I smiled. "Let's see what you've learned with each other. Remember, when I ask a question I expect an answer. If not you'll receive one slap from the belt. Clear?"
"Yes Mommy." They both responded.
"Amy have you sucked Adam's cock?"
"Yes Mommy."
"Show me." I slapped the belt across my palm again.
She instantly dropped to her knees with tears welling in her eyes as she reached out and took his huge cock in her hand, lifting it slowly though there was little need as it hardened quickly an stood out from his belly like a pole. She leaned forward and took the fat head between her lips and he groaned as she tightened her lips and pushed the head between them.
"Nice cock my son." I said as his sister pushed most of his cock into her mouth. Still there was four inches or so outside of her lips. God he must be ten inches long. "I'll bet you're longer than your father."
He moaned again as she began to bob back and forth fucking his hard cock with her mouth. "Can she take it all Adam?"
He could barely talk from the pleasure his sister's mouth was giving him. "No Mommy she can't. No one has been able to so far. Amy's been the best and this is all she can get inside her mouth."
"Well, Mommy will have to fix that for you soon."
He looked over as I dropped my hand between my spread pussy lips and began to finger my clit. He watched me intently as he entwined his fingers in her hair and started fucking her mouth. "She likes it when I do this more than just sucking it."
"My what a little cock slut she is." I smiled and Amy groaned as she heard me call her such a nasty name. "Yes baby girl that's it take your big brother's cock. You love it don't you? You love your big brother's cock fucking your mouth don't you slut? Whimper once for yes twice for no." She whimpered once around his pumping cock.
I got my dildo and leaned back for a second pushing it in deep then rocked forward pressing it even deeper against the bed. I began to flex my cunt around it and fucking up and down against the bed as Adam watched me fuck myself as his sweet little sister gobbled his big fat cock. He moaned as she began to suck harder on his head each time he pulled out and I could sense he was ready to cum.
"Stop Amy. I don’t want your brother cumming just yet."
He groaned loudly telling me my hunch was correct. She pulled back her face flushed and lips bright pink from their use. "Now Amy sit in the chair and scoot out to the edge. Spread your legs widely apart." When she had done so, I said, " Now Adam I am quite sure if she's sucked you off before you've returned the favor?"
