Swearth

"Swearth" is a planet very similar to Earth, but weird, farcical and unrealistic.

“	Would you say it's more or less unrealistic than battling Nanobots inside Ultra Magnus's mouth? Or being attacked by a giant thumb? Or fighting invisible, charisma-powered parasites? Or visiting sitcomworld, for that matter. A planet with its own theme tune.	”
—Rodimus, "The One Where They Go to Earth"

Fiction

2005 IDW continuity

Left at death's door by a combination of extreme self-neglect and an infection, Swerve's mind retreated into an imaginary world based around his love of Earth's sitcoms. Unfortunately, due to his exposure to Brainstorm's meta bomb and briefcase, a reiterative time-loop had been created inside him, causing his holomatter generator to create a life-sized version of said imaginary world that began following the Lost Light at a distance of 400 miles.

Keen to save their crewmate's life, teams of Autobots (including Megatron!) began projecting their own holomatter avatars onto "Swearth", as Rodimus dubbed the new planet, but found themselves caught up in a series of implausible, comedic events. Meanwhile, Tailgate discovered a comic book series called More than Meets the Eye that appeared to detail the adventures of the Lost Light's crew up until that point, which was issue #43.

Eventually, the Autobots realised that their three wacky neighbours—Ted, Sheldon, and Jerry—were really aspects of Swerve's personality split three ways by a program glitch. Once recombined back into Swerve proper, he was able to indicate that the infection that was killing him was due to an old bullet wound in his shoulder. Back on the Lost Light, Velocity removed the bullet and treated the infection, and Swearth began to fade away. The One Where They Go to Earth