Phineas lay draped across his bed, staring at the ceiling. Their bedroom was sweltering in the summer heat, and neither of them felt like doing anything. Phineas propped himself up and looked over at Ferb.
"Man, Ferb. When was the last time we were actually..bored? Like, we've exhausted all our usual ideas."
"Well.." Ferb said after a pause, "we could always try something new."
"What were you thinking of?" Phineas said with a smile playing on his lips.
Just then Candace burst into their room, startling them both.
"MOM! PHINEAS AND FERB ARE… are..doing nothing?" she said, confused. "Um, never mind," She said sassily, and stormed out, slamming the door behind her. Phineas and Ferb were left in silence once again.
"Where were we?" Ferb asked, getting up and locking the door.
"You were just about to tell me your idea," Phineas said with a wink.
Ferb's cheeks began to flush with color and he slowly walked over to where Phineas was laying, propped up by his arms. He sat down on the bed next to Phineas and whispered in his ear, "We're gonna do it all".
Hearing this, Phineas began to feel a new sensation. It started as butterflies in his stomach, then traveled lower and lower.
"Tell me more," Phineas breathed, beginning to feel warm all over.
Ferb grabbed Phineas's hand and ran it up his own chest.
"Can you feel my heartbeat?" he whispered. Phineas nodded nervously, and an excited sensation washed over him.
"Good," Ferb whispered, still clutching Phineas's hand. He slowly slid it down until both their hands were resting over Ferb's crotch. Phineas's breathing quickened, and he sucked in his breath when he felt something hard beneath Ferb's pants. Ferb released Phineas's hand and crawled on top of him, slowly pinning him to the bed, almost dangerously slow, Phineas thought. He loved the helpless feeling that came over him as he lay pressed against the bed. Ferb slowly reached under Phineas's shirt and ran his fingers over Phineas's bare chest. Phineas tried to suppress a moan, but it escaped his throat, making Ferb even harder. Ferb began to move a little faster and ripped off Phineas's shirt soon followed by his own.
"Fuck," Phineas whispered, as his eyes rolled back into his head with pleasure. Ferb began to grind against him, giving Phineas an erection. Spontaneously, Phineas broke his hands free and began to unfasten Ferb's belt. Biting his lip in excitement, Ferb grumbled,"That's it little brother."
Soon they were both down to just their boxers, and they stared at each other for a moment. Suddenly, Ferb pinned Phineas down against the bed, hard. He began to tug down his step brother's boxers.
"Is this ok?" he asked tentatively.
"Yes, one hundred percent yes," Phineas replied, gripping the bed sheets through clenched fingers. Ferb grinned and continued. He threw Phineas's boxers across the room and wrapped his hand around Phineas's surprisingly large cock. Phineas lets out a loud moan, Ferb placed his free hand over Phineas's mouth to be sure Candace can't hear them. Ferb starts to slowly move his hand up and down Phineas's bare penis , picking up speed by the second. Phineas writhed under Ferb in pleasure, and his penis was about to erupt when they heard a sudden knocking on the door.
"PHINEAS! FERB! WHAT ARE YOU GUYS DOING? MOM! PHINEAS AND FERB LOCKED THEIR DOOR!" Candace screamed from behind the door.
"We'll finish this soon," Ferb whispered into Phineas's beck as he pulled on his pants. Phineas lay on the bed there panting while he watched his step brother shimmey back into his clothes. His cock was still throbbing, and he longed for one more touch from his brother.
"Are you coming?" Ferb asked, winking at Phineas as he slid out the door and down to dinner.