This is the 7th (short) story in the series.
I was laying in bed the next morning after my threesome with mom and Lisa. After thinking about yesterday and grabbing my phone to stare at the picture I took of them, I was turned on, hard as hell, and in need to cum. I had remembered what my mom said about telling her that I was going to get myself off if she's home but I was too timid to do so. Staring at both of their tits, I just reached down and started pumping my fist over my dick. There was a subtle knock at my door right as I was starting to get into it. I quickly covered and hid my phone just before my mother walked in. My mom was in her early 50s but in great shape.
"Your dad just left to go workout and your sister is at breakfast with her friend. Do you need help with anything?" She asked while starting at my blanket. It was basically as circus tent with my hard dick underneath.
"Uh. Yeah." I replied nervously.
"Ok. But I'm first. Let me see you." Mom said as she climbed into my bed next to me after pulling down the sheets. Mom laid down so that her pussy was next to my head and her face next to my hard dick. She abruptly took down her pajama pants to show me her white panties and then removed her shirt. Her breasts were nice but sagged a bit. Her nipples were hard with excitement.