Gassy giant. This planet is a gas giant planet that occasionally expelled a plume of gas out into space. This gas has been shown to be composed of methane and hydrogen, and stinks to high heaven. No one likes this planet because it’s getting blamed for universal warming. However little kids and grown men find it extremely funny :D. The residents here are all responsible for collecting gasses and distributing them to the other planets in exchange for food, water, and hazmat suits.
A popular theory to residents is that there was once a gassy giant that was so big it was responsible for the Big Bang.
(Ok now that was just ridiculous. I’ll think of a real one later )