It was a cold dark night. Nasa was fast asleep. He was dreaming about going out with other boys as he got to know the world better. It won't be long until he meets his ten other brothers. Nasa suddenly felt something rubbing his dick. He woke up to see his parents frotting with him, much to his surprise. 

“It's a pee pee sandwich.” Nasa said, laughing.

“That's right, son.” Armen said.

“Almost like we're getting sucked at the same time.” Tails said.

A few minutes later, the three started cumming simultaneously. Later, Tails is laying on Nasa's bed, with Nasa standing next to him, his cock twitching.

“I know it's been about a week since I did this, but…”

Nasa slides his dick inside Tails’ asshole, before Armen put his inside Nasa's. The two let out moans as they both hump each other.

“Nasa, sweetie. Harder!” Tails said.

“Son, your father needs to be satisfied.” Armen said.

As soon as Nasa's about to cum, his cock slips out of Tails’ asshole and he cums on his own father.

“Oh, crap. It slipped.” Nasa said.

“Nasa, sweetie. Give me more.” Tails said, his cock still twitching.

Soon, another round of the Einsteins fucking each other occurs. The intensity increases and soon the three look like they're all in an oven. First Tails cums, then Nasa cums after he pulls out of Tails’ asshole, and finally Armen cums inside his son's butt. Later, the three lay down on Nasa's bed.

“We’d like to apologize to you for earlier.” Tails said.

“It's okay, Dad.” Nasa said. “Just let me know, next time.”