Fibby (F/reddie + G/ibby) is the pairing of Freddie Benson and Gibby Gibson. Another name commonly used isFribby (Fr/eddie + G/ibby). Fibby can also be termed as Geddie (Fr/eddie + G/ibby), but it's rarely used in this fanbase. Freddie and Gibby have shown to get along rather well. This pairing probably will not happen as a romantic pairing, because Nickelodeon is a children's/teens' network. This ship is mostly supported as a friendship; however, there are some shippers who ship the two as a romantic couple.
In iEnrage Gibby, their friendship was in danger after Gibby thought he saw Freddie "macking on" his girlfriend, Tasha. The issue quickly was ruled as a huge misunderstanding. Other than that, they are shown to be really good friends. They are shown to be extremely close in the final season of the show, as they are seen constantly hanging out together and interacting.
To get revenge on Sam for sticking a dead fish in his locker, Freddie pranks Sam by handcuffing her to Gibby. Freddie likely choose Gibby to be part of this practical joke because Freddie knows Gibby is a rather gentle-tempered boy, who is a good sport about the pranks other kids pull on him.
Freddie screws up his face in disagreement when Sam screeches, "Gibby's way worse than a dead fish!"
Traumatized, Gibby runs screaming out of the Shay apartment, after Freddie unlocks the set of handcuffs. Freddie looks down at the floor, likely out of guilt, when Carly scolds, "Like Gibby's therapist didn't have enough to deal with!"
After the iCarly webcast concludes and the obnoxious Wade Collins leaves the studio, Gibby proudly shows off his first chest hair to Freddie, Sam, and Carly. Freddie looks like he feels sorry for Gibby when Sam rather ruthlessly plucks the hair off Gibby's chest.
Freddie became worried about Gibby brushing Wade's hair for a while.
Gibby tells Freddie confidentially that he isn't allowed to talk to Wade Collins directly.
Sam tracks Freddie down in the halls of Ridgeway to run her latest idea for an iCarly segment past him. She suggests dressing up Gibby and some other guy in bikinis and having them fight each other with dog food. Defending Gibby, Freddie protests, "That's humiliating and gross!" Sam takes Freddie's disgusted reaction as a compliment to her idea and exclaims, "I know!"
When Sam called Gibby over and told him that she had a vision, Freddie warned him by telling him to run.
Freddie looks offended when Sam calls Gibby a loser and pulls him around by his backpack.
After taking off his shirt in front of Mr. Howard, Gibby asks Freddie, Carly, and Sam if they have any lotion. Gibby doesn't bother to explain why he needs the lotion.
As Gibby is ignorant of the reasons locker 239 is so special at Ridgeway, Freddie, Carly, and Sam gush over the locker's uniqueness to Gibby. Freddie walks over to Gibby and tells him that cheerleaders stroll past the locker on their way to practice. As a small male bonding experience, Gibby and Freddie smile knowingly at each other at the thought of attractive cheerleaders passing locker 239.
After asking Freddie to the Girls' Choice Dance at Ridgeway, "Magic" Malika claps her hands and pulls a disappearing act. In her place stands Gibby, shirtless (as usual) with a half-eaten banana in his hand. When Freddie asks Gibby how he was able to do that trick, Gibby stammers, "I-I have no idea! Whose banana is this?"
When Sam pushes Gibby up against some lockers after he turns her down for the Girls' Choice Dance, Freddie strides over to the scene and loudly demands, "What are you doing?" allowing Gibby to escape Sam's angry grasp.
Gibby walks up to Freddie, who is removing some asparagus stalks two schoolmates glued to his locker, and asks, "Guess what they're serving in the cafeteria tomorrow?" Edgy from all the teasing he's been the brunt of recently, Freddie snaps, "Oh, is it asparagus? 'Cause that'd be so hilarious!"
Confused and hurt, Gibby replies testily, "No, it's fish sticks." Freddie realizes too late that Gibby wasn't trying to be sarcastic and rude with his question earlier.
Freddie accidentally hurt Gibby's feelings and feels bad about it.
Though definitely seeing the humor in the situation, Freddie is, nevertheless, concerned that Gibby has been brushing his teeth with mustard for four minutes straight on the iCarly webcast.
Unable to take the pain any more, Gibby asks Freddie and Carly if he can stop brushing his teeth with the mustard now. As Spencer isn't back from checking in with his date Candace yet, Freddie gestures for Gibby to stall until Spencer gets there. Ever the good sport, Gibby continues to stretch out the segment.
Apparently, Gibby and Shawn Hillard are on opposite sides of the raging debate about the existence of Bigfoot. Gibby walks up to Freddie and Sam in the halls of Ridgeway and asks them to tell Shawn that Bigfoot does indeed exist.
When Shawn insists further that Bigfoot is a myth, Freddie sounds like he is about to say that, technically, Bigfoot being a "myth" does not preclude his existence. Gibby cuts Freddie off, assuming that he is taking Gibby's side.
As Gibby and Shawn walk away together, continuing to natter at one another about the existence of Bigfoot, Freddie calls out after them, "Guys, don't fight about it!" Throughout the series, Freddie has shown to be averse to conflict (iDWTF, iQIC, etc.) and dislikes it "when friends fight."
When Sam hits Gibby in the face with a bag of sandwiches, Freddie closes his laptop and helps Gibby up off the floor. "Why are you being so hard on Gib?" Freddie demands.
In the Bushwell Plaza elevator, Gibby warns Marissa that if she forbids Freddie to date Sam, it will only make him want to date her more.
Gibby expresses surprise when Freddie confides that his application to NERD camp was rejected. "You're perfect for that!" Gibby laughs, and Freddie responds, "I know!"
Even though Gibby betrayed his friendship with Freddie by snitching to Marissa that her son and Sam are going out, Freddie nevertheless does his best to rescue Gibby when he gets into a physical fight with Sam in the iCarly studio.
When Marissa advances to attack Carly for trying to get Sam and Freddie back together again, Gibby throws Marissa out of Carly's studio, declaring that "it's wrong to interfere with young love."
Gibby watches with a smile as Carly pushes Sam and Freddie to make up after their fight.
At the end of the episode, Gibby serenades the newly reconciled Freddie and Sam by singing, "Loving you is my favorite thing to do ..."
Freddie applauds Gibby's slick lounge singing and praises, "That was good, Gib."