Secretly

My mom made a simple spaghetti for dinner. It was still a bit warm but almost room temperature. I took a scoop of my food and purposely moved my hips slightly.

I am having a hard time moving but it is enough to stimulate both of us. I continued this processes and slowly figured out what feels best with my limited movement. My sister is doing her best to not say anything and has started moving a bit on her own. I look at my mother and it doesn't seem like she has noticed what we are doing. Then she looks up and we try harder to hide our movements.

"So how was Andrew and Kelly?"

The thought of what you did to Kelly only turned you on more. Your dick twitched in her sister making her squirm.

"Good. We played some games and Kelly made us some sandwiches for lunch."

"Oh, who has better cooking?"

"Ugh, I don't depends on the food I guess."

"Sarah, how was your party?"

My sister had her mouth full, she hides her face and moans quietly. I feel her insides tighten and while I want to finish myself, mom is currently watching us.

"It looks like she is too busy eating mom."

"I see that, well we can talk about that later then."

My mom stops talking and focuses on eating. With my mom looking away I start to move faster and with more ****. I feel her body tighten even more than before pushing me over the edge.

I whisper into my sister's ear, "I'm going to cum."

Her eyes widen but she doesn't have time to do anything. I feel my dick pulse and my cum spurts into her pussy. Out of breath I breath into her ear and then whisper, "Thank you for letting me use my pussy."

"Sarah dear."

"Uh, oh what do you need mom."

"Are you taking those pills I gave you?"

If her face wasn't red it certainly is now and she looks away from mom. She must have known what we were up to.

"N-No."

My mother is now glaring at her.

"Why not?"

"I forgot."

"I will be reminding you daily from now on. Also you will be sleeping with your brother for a week."

You felt your softening dick stiffen upon hearing that and started thinking about all I could do to her.

"What but mom..."

"No buts, and don't even think about trying to sleep at a friend's house."

"Yes, mother."

"Also if I hear that you didn't let your brother use his vagina I will extend this punishment."

"O-Ok."

My dick twitch upon hearing that.

"And Andrew."

"Yes?"

"If I catch you masturbating at dinner again I will punish you too. "

"Yes, mom."

I ate the last bit of my food and knew I wanted to get off again.

"Let's go to my room sis. I want to masturbate."

Her face looked like it was starting to clear up until you said that.

"O-Ok."

You both get up and quickly go to you room.