Candace is looking at the ceiling feeling board.

Candace: "Aaauuuugggghhhhhh! When will Phineas and Ferb do something? I mean, I know that they don't 'always' so crazy things, but still!"

Then, Candace heard something.

Phineas (through the wall): "Aaaauuuugggghhhhh!!!"

Candace: "What the heck? Did that came from the bathroom?"

She tip toed through the hallway, to the bathroom. She slowly opened the bathroom door. And what she saw was covered by the shower curtain, but she can tell that Ferb was fucking Phineas.

Phineas: "AHHH AHH AHH OHHH AHH MMMH AHHH AHHH AHH OHH AHHH AHH AHH AAH MMH OHH AHHH MMH AHH AHH AHH AHH."

Candace looked back for a second.

Candace's thoughts: "Holy crap. Did that really just happen?"

She checked again, now with Phineas and Ferb, doing in the doggy style. This time, she did not looked away.

Candace's thoughts: "Holy crap. They are!"

Candace went back to her room.

Candace: "Should I tell mom? Or should I let them keep their secret?"

She placed her head to the wall. All she can hear, was this.

Phineas (through the wall): "OH OH AH AH MMH AH FERB!!! HARDER, HARDER!!! OH DEEPER! AH AH AH AH AH AH AH! F-FERB YOUR HOW ARE YOU S-SO FAST?!! OH OH OH AH OH AH OH OH!!!"

As Candace hears Phineas's moans, she can't feel her hand sneaking down her crotch. She notices this, and tries to stop.

Candace: "Ah crap. Oh forget it."

Her hand got into her underwear. She rubs her fingers around the outside of her vagina. She then places them inside her.

Candace: "Ah, ah, ah, ah, ah."


In the bathroom.


Phineas: "Ferb, please let me suck your penis, Please!"

Ferb: "Ok. But first."

Ferb turns around, then kneels up, just to get his kinda thick ass, to Phineas's face.

Ferb: "Eat out of my ass."

Phineas (blushing deep red): "O-Ok."

Phineas grabbed a hold of Ferb's behind. He licked around the butt-hole. Ferb kept pushing his ass to Phineas's face. Fortunately, Phineas sticks his tongue into Ferb's butt-hole.

Ferb: *Moaning* "That feels so good."

Phineas is focused on Ferb's ass. Sure, he can taste the poo in there. But if you're Phineas in that situation, who gives a shit. Unfortunately, he gets his tongue out of the cute thick ass.

Ferb: "Why did you stop?"

Phineas: "Well A, I needed to catch my breath. And B, I like you to spread out your ass."

Ferb: "*hehehe* Now your getting it."

Ferb grabbed his ass and spreads his cheeks. Phineas sticked his 2 fingers in the butt-hole, then spreads the hole out. He sticks his finger on the other hand, in the hole.

Ferb: "Oh, oh oh oh yeah, oh oh oh."

Phineas kept pushing his finger in. With another to tag along. He saw blood on his fingers.

Phineas (scared): "OH CRAP! YOU'RE BLEEDING!!!"

Ferb (desperate): "Don't worry about."

Phineas (scared): "What-"

Ferb (desperate): "It's fine. It's fine. It's supposed to do that, in this age. Just keep going!"

After Phineas calmed down, he gets on top of Ferb. Preparing for what's to come next. He thrusts his dick, to Ferb's ass. Phineas also trobbed his dick, while thrusting him.

Phineas and Ferb: *moaning* *groaning*


20 minutes later


Phineas and Ferb both made a white goopy mess. Which was washed away, by the lukewarm water. They both panted on top of their bodies.

After that they washed their bodies. Cleaning each other's back, hair, feet, and even ass.

After they dried off. They both went to the hall, and heard panting in Candace's room.