Mitchell walks in

Just as you were beginning to eat your brother's ass, another one of your brother's walked into the bathroom. You pulled off to see your older brother, Mitchell, walking towards the toilet. He glanced over and paused.

"What the fuck are you two doing?" he asked, staring incredously.

Before you could answer, CJ spoke up.

"We're preserving water by showering together." he said, matter-of-factly, "He's cleaning my backside cause I can't reach."

"Right..." Mitchell said, accepting the explanation, but still suspicious.

Mitchell turned back and pulled out his dick for a piss. You momentarily considered pulling your big bro in for some fun, but decided you had plenty of time to snatch all your bro's. You returned to CJ's ass, making the boy jump as your tongue made contact again. Because you'd only recently fucked him, his hole was a lot easier to pry open. With your tongue up your younger brother's chute, you snacked on his delicious hole. You could taste your cum as your tongue explored your brother's tunnel. He moaned at the intruding muscle, masterbating at the feeling.

"Mmm, fuck."

You pulled off in shock. Amongst CJ's horny moaning, a quieter, deeper moan could be heard. You glanced over to see Mitchell wanking his cock, watching the two of you.

"Mitchell, what the fuck?" you ask, genuinely stunned.

"What?" he says, now slowly playing with himself.

"Does this turn you on?" you question, "Are you gay?"

"You wish, bro." he laughs, "I'm just feeling horny."

You couldn't understand until you remembered the note saying men with the same trait will be aroused by your sexual acts. That gave you plenty of new ideas.