Mom called us into the living room after dinner and told us to strip. "Sex ed starts now," she said, her voice low and direct. "Both of you are old enough. Clothes off."
I kicked my jeans aside and watched my sister do the same. Her tits bounced free when she pulled her shirt over her head. Mom stood in front of us naked already, shaved cunt glistening under the lamp. She pointed at my hard cock.
"Touch it," she ordered my sister. "Wrap your hand around your brother's dick and stroke like this." She demonstrated on me first, firm grip, slow pull from base to head, thumb smearing the precum. My sister copied her, fingers warm and tight. "Good. Now suck it."
My sister dropped to her knees without hesitation. Her mouth opened and took half my length in one go. Mom pushed her head down farther until she gagged. "Deeper. Family sex ed means you learn to take it all." Spit ran down my balls while Mom fingered her own pussy, watching.
When my sister pulled off gasping, Mom bent over the couch. "Your turn to fuck. Put it in me first so she sees how a cunt takes cock." I lined up and shoved inside. She was wet and hot, gripping me tight. "Harder. Pound your mother's pussy like you mean it."
My sister watched from the floor, rubbing her clit. Mom reached back and spread her ass. "Now switch. Fuck your sister while I tell you both exactly how to do it." I pulled out and slammed into my sister. She cried out but pushed back. Mom coached every thrust. "Angle up. Hit that spot. Make her cum on your dick."
We switched positions twice more. Mom rode my face while my sister sucked me again. Then Mom had my sister on her back with legs spread wide. "Watch how I lick her," Mom said, tongue dragging over my sister's swollen clit before she looked up at me. "Your turn to fuck while I eat."
I fucked my sister deep and steady while Mom's tongue worked between us, licking my shaft on every stroke and sucking my balls when I bottomed out. My sister came first, cunt pulsing around me. Mom pulled me out and swallowed my load straight from her mouth, then kissed it into my sister's open lips.
"Lesson one done," Mom said, wiping her chin.
"Tomorrow we do anal."
