Sow the seed.

Morty threw his head back, and slammed himself deep inside Summer's tight pussy. The young man felt himself flooding his sister's wet tunnel with his seed. It was one of the most amazing feelings he had ever had. As he gasped in pleasure, Ethan, who he had forgotten about, emptied his own nut, into her eager mouth.

“Damn Ethan, you filled her up.” Morty chuckled languidly.

“She's like a vacuum dude.” Ethan chuckled.

“Most popular girls are, am I right?” He smiled, as the two fist bumped.

Summer swallowed his load, her face turning red. “You guys think I'm cool?” She asked hesitantly.

“Hell yeah.” The two said in unison.

Morty pulled out, and stood up. “Catch you two later.” He said, reaching up and pulling the invisible Inceptor out of his ear.

Morty woke laying next to Summer's bed. Sitting up he could still feel the glow of having sex with his sister. It felt so real, that he wondered if it was just as good as the real thing. Not that it meant he wasn't going to try to get this to happen in the real world. That was the long game after all. Standing up he glanced at Summer who was still in the dream induced state, from her own Inceptor.

Biting his lip, he gently reached forward and cupped one of her large breasts. With a shudder he marveled at how good it felt. Even if it was through her pink shirt. Not wanting to risk getting caught, he gently pulled the device from her ear, and slipped out of her room, before she could wake up. Heading back to his room, he put the devices away, and hid them, before finally going to bed.

The next morning Summer had trouble meeting his eyes, and Morty had to fight not to blush whenever he saw her. Thankfully this was his second into her dreams, so he had some experienced in hiding his nervousness. He considered entering her dreams again, but thought that if he did it to often she might get suspicious, so he **** himself to hold off.

A couple days passed, and he was in his room working on homework, when he heard a knock on his door. “Come in.” He called out, from his computer desk.

Summer opened the door, and walked into his room. “Hey bro.” She smiled nervously.

“Wh, what's up Summer?” He smiled, surprised.

“I have a problem, I was, hoping you could help.” She replied bashfully.

“Yeah what's that?” He asked, confused.

“So uh, I know you never really thought about it, but Jessica and I are kind of similar, physically.” She said, trying to work up to her question.

“Uh, yeah I guess.” He nodded, not wanting to admit his own recent revelation on the subject.

“I uh, I'm into this guy, and I was hoping you could. You could help me pick out an outfit, for Halloween.” She said shyly.