After breakfast, Phineas and Ferb went to the television. They go to Hulu, and played The Simpsons, the golden era, anyway. Phineas and Ferb snuggle each other while watching it.
After 30 episodes, Phineas is taking a shower. The water sprinkling down to his face, all they way down to his smooth soft legs. As he was about to get the soap, he heard footsteps coming in the bathroom.
He looked through the shower curtain to see Ferb, naked, with his legs crossed, while sucking on his fingers. Phineas clutched on the shower curtain, while blushing bright red. Ferb got closer to the wet step-brother. He grabbed his wet, soft, clutching hands. Ferb could hear Phineas breathing heavily.
Ferb: "Mmm. Phineas, have you realized you look so cute when you're blushing?"
Ferb got in the shower. And Phineas stepped back a bit. He could see the warm water go all over the hot body that Ferb has. And you should hope that it'll be better when he's 18. Phineas knows that Ferb has a hot body. And the fact that Ferb slides his hands from the legs to his a little bit wide hips, while bitting his lip, was making it worse.
Phineas: "F-Ferb y-y-you could have w-wait till l-l-l-later. I-I-I mean, w-we're n-n-not a-alone."
Ferb pinned Phineas against the wall. His finger shushing the wet red-head.
Ferb: "Don't worry. Just relax. And let your big brother give you a good time."
Ferb knelt down to his little step-brother's lower level. Phineas's 2 1/2 inch penis slowly moving up. Ferb grabbed the cock. He had waited so fucking long for this moment. Ferb licks the tip of the dick.
Phineas: "Mmh, mmh, mmh, mmh, mmh."
Ferb kept licking the penis, till he thinks that Phineas is ready. Then, he puts the whole cock in his mouth. He bobbed his head back and forth.
Phineas: "Oh, oh, oh, oh, oh, oh, oh."
When Ferb needs to catch his breath, he would get the cock out of his warm mouth, catch his breath, then licks the base of the dick, then puts the cock back in this mouth.
It wasn't till 30 minutes later, that Phineas let out a big moan, when white stuff came out of the penis, and into Ferb's mouth. The British boy's mouth lets go of the cock. The cum drips down, from the mouth. His eyes looking, at the eyes of a cute, blushing, Phineas.