There's a mix up at the firehouse. Elon Spengler, Egon's twin brother, shows up in a similar uniform to the Ghostbusters. Of course, since it's his uniform for his company called the Wastebusters. Why has he dropped by? To check on the containment unit and make sure everything is under EPA regulations. While checking the meters, he is met by Peter.

Peter: Hey, Egon. Kinda early to be checking the containment unit.

Elon: Not too early for me. By the way, it's E…

That's when the sirens go off.

Peter: Glad you are suited up, pal. Time to hit the road and catch a ghost.

Elon: But I'm not…

Peter: What are you worried about? Come on.

Elon agrees to go with Peter and the others to a job. This will be Elon's first time using a proton pack. In the backseat of the Ecto-1, Elon feels intense pressure in his abdomen. Peter, who's in the back with him, notices him sweating as he clenches his butt cheeks.

Peter: Are you okay?

Elon: I knew I should have used the bathroom before I left the office. Fuck.

The pain subsides and Peter responds.

Peter: Do you need to take a shit or something?

Elon: Yes if you wanna be nosy about it.

Then another cramp hits. He grits his teeth while clenching his buttocks. Peter is getting turned on while watching his friend trying so hard to not have an accident. That's when notices the logo on his right arm that's not the Ghostbusters logo. Right away, he knows it's not Egon, but Elon and pretends not to notice out of foreplay. Elon could feel the tip of the turd start to push out, despite all his intense efforts, so he forced himself to squeeze harder.

Peter: Should I ask Winston to stop where there's a bathroom?

Elon: I'll be fine.

The pain subsides.

Elon: Where are we going anyways?

Peter: Multiple haunting dad at the mall. Excited, Egon?

Elon: Sure, why not.

The Ghostbusters get to the mall and put on their proton packs. Ray hands Elon the PKE meter.

Ray: You take this while I use the ecto goggles.

Elon: Yeah, sure.

Elon, in a random store, leans against a shelf when he feels another cramp. Peter is not far behind him. The pressure intensifies and he moans in pain. He tries to move in an area where he is not seen by anyone. He's unaware that he's being followed by Peter. Elon, in the dressing room, admits defeat.

In the dressing room, Elon felt the poop begin to slide out of his rectum and into his briefs. It was at that moment that he decided to just let it all out. He is startled by a voice from outside the dressing room.

Peter: You're not shitting yourself, are you?

Elon: Back off, Venkman. I'm having a bad day.

Peter: If it helps, I won't tell anyone about this.

Elon: I appreciate it.

Peter: And I know you're Elon. Honestly, I think you're hot and you shitting yourself is even hotter.

Elon: Will you shut up?!

The poop just kept coming out and the bulge in his uniform grew larger, causing his uniform to be pushed further away from his buttocks. This is strangely making him feel aroused.

Peter: I wonder if I can come in and watch.

Elon says nothing, as He started to bear down and push the giant turd out of his rectum. The pleasure this brought is sensational and moans softly. His briefs and uniform is now grotesquely distended. Peter manages to peek through the crack of the door and actually has a good view.

Peter: Damn, Elon. Need any help?

Elon: Fine, come in and don't say anything.

Peter comes in and is turned on by what he sees. Elon starts pushing again and the giant turd continued to slide through his distended anus with a soft, wet crackling sound.

Peter: Fuck, man. We're you constipated or something?

Elon: Shut up, Peter.

Elon parts his legs, arched his back slightly and pushed with all his might. The sensation is sheer bliss as he tries to poop his pants. Peter now has an erection. His eyes became transfixed on the shape of Elon's uniform as it grew. Elon could feel the poop spread over his backside and forward to the front of his briefs, which caresses his ball sack.

Breathing hard, Elon continues on filling his briefs. The long discharge of poop is almost done. The poop now emerging from his anus is now softer. It's taking Peter a lot of willpower to not stroke his cock while watching Elon.

Peter: Are you done yet?

Elon: No.

Peter: Can I make out with you when you're done?

Elon: Peter, shut up.

The weight of all that poop was making his underwear sag heavily. Good thing he's wearing his uniform to keep it all from falling to the floor. The gusset of Elon's briefs is now hanging down an inch below his crotch. He starts panting near ecstasy when he let Peter caress his face and kiss down his neck. The poop is now very soft and flowing downwards. Then it just stops.

Elon: I'm done, Peter.

Peter: Damn, Elon. I don't wanna waste all this shit. I wanna go back to your place and get really dirty.

Elon: Peter, I'm flattered, but I don't want my first time to be another notch on your belt.

Peter: It won't be like that, Elon. I promise.

Peter then puts his arms around Elon's waist, pulls him in and kisses him on the lips. The kiss was just as intense as the feeling of pooping his pants.

Elon: I thought you were straight.

Peter: I'm bisexual.

Both Peter and Elon manage to sneak away from the others and take a cab to Elon's apartment. Elon tried his best not to sit in his mess til he and Peter are alone in his apartment. Inside Elon's apartment, he finally gets a chance to sit down.

Elon hesitates and sits down slowly. His poo-packed briefs his the couch first and began to squish as he puts more weight on them. With a squelching sound, he eased his full weight down on the couch and felt the huge mass of poop ooze and slide sideways and forwards.

Peter: Do you feel much better?

Elon: My dick is hard, but it's covered in poop.

Peter: That's okay. I have a poop fetish and it doesn't bother me.

Elon: Then shut up and get your clothes off.

Peter closes in and kisses Elon on the lips. Elon deepens the kiss by inserting his tongue in Peter's mouth. Peter grinds his erection against Elon's. Peter breaks the kiss long enough to start undoing his uniform and Elon's. He manages to strip Elon down to his soiled briefs.

Peter: You're first time is gonna a ride to remember.

Peter gets Elon into a rear entry position. He slowly pulls down Elon's soiled briefs, revealing his poop covered ass as poop falls onto the floor. Peter gets his hands and cock dirty by grabbing Elon's hips and penetrating his ass. Elon moans loudly.

Once Peter pushes his dick all the way in Elon's ass, he starts thrusting and eventually fucks him harder and faster. Elon uses his right hand to masturbate while being fucked from behind. That's when Egon shows up and sees everything.

Egon: Oh my gosh. What the actual fuck?

Elon: Egon, it's not what you think.

Peter: Hey, Egon. Elon is my boyfriend. Hope you don't mind.

Egon faints and Peter climaxes. The end.