Please note that this takes place before Backyard Affair and Orgy in the Lair.

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Chapter 1

Isabella awoke one morning suddenly horny. It wasn’t puberty, she was too young. Not just for anyone, Phineas, her dream boy, who sadly didn’t care about that stuff yet.

She was tired of hinting her love in with conventional methods. Time to do it with sexy methods.

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Chapter 2

She tried a lot of different things. She tried just showing up naked at his house. He just asked her why she was naked.

She tried posing hot. She went to Phineas’ house while he was getting parts and Ferb was in Britain. He was just confused and asked her to put her shirt back on.

She tried skinny dipping during the episode where they shrunk. No one cared that she was naked.

She tried organizing a day they met naked.

She tried a sex conference. Not with her teaching, but just to get him interested.

She tried a blowjob contest but no one wanted to continue to sex.

Phineas did accidentally barge in the bathroom while she was in there. Helped a little but not much.

One last thing. Thanksgiving is here and she was a turkey for a bit. He joked with her but no sex.

That was it. Time for desperate measures.

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Chapter 3

She told her mom that if Phineas comes over, just send him to her room.

One day he did and was sent to her room. She layed on her bed, pulling her panties away to reveal her vagina, saying Hey Phineas, I am still a virgin. He was just confused.

Another time, it was early morning and Phineas had come over. Isabella had just awaken a couple minutes earlier so she said in a hot way, still in nightshirt, panties and no bra, “Phineas, I know what we’re going to do today. He was embarrassed and just told her to get dressed, eat breakfast and meet at his house at 9.

 

She tried again.

A few days later, she needed someone to sign off on her First Orgasm Badge. Her hopes were that Phineas would think sexy thoughts about her. Didn’t work even though she got the badge.

Time for even more desperate measures.

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Chapter 4

Another badge was needed. A Persuasion Badge. She thought she’d persuade Phineas to have sex with her. She’s when to Phineas’ one morning naked to do it. It took a bit but she did it by reaching into his pants and pulling his dick out. It got hard and he was arroused.

First, Isabella gave Phineas a handjob as he fingered her hole.

She licked the tip of his cock.

Next, a blowjob

 

 

She told him that we should take it inside. He agreed.

He was ready for sex and couldn’t wait until they got to the bed so he stuck it up her vagina in the hall.

 

After a bit they went to the bed. Isabella rode his penus. He asked, ” Wow Isabella, but aren’t we a little young to do this? ”

Shereplied, “Oh yes, Phineas, yes we are!”

 

After a few minutes, he moved so his cock rubbed her butt, when he came on her back. He was then unconscious. Isabella took advantage of the situation.

 

 

She gave him a handjob while he was asleep.

 

 

A half hour later, he woke up. It took a bit,  but he ended up doing the 69

 

After 10 minutes of that they cleaned up and went home.

The End

 

Not!

The reason I did that was because it works make a good stopping point. I could have ended there if I wanted to, but I didn’t. I recommend you read it all the way through, but do what works.

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Chapter 5

The next day, Phineas went to Isabella’s house. She was ready for more apparently because she was walking around the house naked.

They went to her room and started up again.

 

After a long time, he came.

The end

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Epilogue

5 months later

I’m pregnant!

 

 

Please note: this is one of many Phineas and Ferb sex episodes I plan to write. Unfortunately, these won’t air on TV. I don’t own Phineas and Ferb nor the pics shown in this story.

Also, this is an updated version. I found more pics that would work well with this story.

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Phineas sat under the tree in his backyard. He was alone. Ferb, his stepbrother, was away at Debate Camp (He never talks), Buford was away at Anger Management Camp, and Baljeet was at Physics camp. The only friend that was still in town was Isabella.

She walked into his backyard and said, “Hey Phineas, Whatcha doin’ ?”

“Nothing,” he replied, “Ferb usually has most of the ideas.”

“I have an idea,” she told him.

Meanwhile, Perry, there pet platypus, walked to the side of the house. A secret elevator door opened, taking him to a platypus sized layer.

A man on a screen told him, “Good morning, Agent P, the evil Dr. Doofenshmirtz is up to something, stop him!”

Perry left the layer.

Candace sat on her cell phone on her bed. She said “Hey Jeremy,”

He replied, “Hey Candace, can I come over? We can have somDoor’s,

“Cool, see you in 20 minutes,” Candace answered.

Outside, Isabella undressed first.

 

“Your turn” Isabella told him.

“What are we doing naked?” Phineas asked after doing so.

Isabella replied, “Lay down.”

“OK,” Phineas said.

“And uncover your penis.” She told him. He did. She crouched down on his penis so that her vagina covered it.

“Oh, this feels good,” Phineas said as Isabella rode up and down his penis.

“Doofenshmirtz Evil Incorporated.” The jingle sang.

Perry barged down the door to the building. Dr. Doofenshmirtz (Doof) said, “Ah Perry the Platypus, your timing is impeccable. And and by impeccable i mean, completely peccable!” A trap fell on Perry.

“To tell you the truth, I’m not up to anything evil today. My daughter, Vanessa, wants to get pregnant.” Doof said, “So invented this! The Cumminator! This inator will cause the penis it shoots to instantly cum. Oh, Vanessa, come here!”

She came and said, “Hey dad, what’s up?”

“You said you wanted to get pregnant well i…”Doof continued to talk.

“No dad, i just wanted a big penis up my vagina.” The teen explained.

“Oh, I see. I’ll do it for you.” Door replied

“Thanks dad.” She said as she took of her clothes.

Meanwhile, Jeremy came to the Flynn-Fletcher residence. Candace was undressed for Jeremy. He said as he undressed, “That wasn’t what I was thinking but OK.”

He penetrated immediately.

“Oh that feels good!” She cried.

In the backyard, Phineas and Isabella were feeling good. Phineas had just changed positions so Isabella was laying down and he was standing. She loved it.

A few minutes later he again, switched positions, so that he was standing and she was on all fours.

 

 

Back at doof’s Perry was just watching as Door had sex with his daughter. As he jerked he hit the cumminator fire button. It fired and hit Phineas’ penus, causing him to cum in Isabella’s vagina ending that affair. It fired again and hit Jeremy’s penus causing him to cum in Candace’s vagina, ending the affair.

The end