Jabba Desilijic Tiure, or simply Jabba the Hutt. Jabba is of the Hutt race and like most of his species, a gangster. Hutts are a large slug-like race with thick leathery skin, human-like arms, large black cat-like eyes, and a wide mouth. A Hutt may weigh in excess of several tons. The species are hermaphrodites and reproduce by fission. They speak Huttese, a language reminiscent of Quechua.
In a room containing many people, where there is one person on a sofa, or similarly large piece of furniture, and somehow is taking up the entire space, someone who is not sitting on said sofa announces "Jabba the Hutt!" and everyone in the room piles on top of the person taking up the sofa. Everyone then continuously states "It's all about the unity" until the Jabba the Hutt ends.
Called such because it looks like a large pile of fat rolls from an outsider's perspective, or like Jabba the Hutt.
Me: "Man, that douchebag Mark is taking up the entire sofa... hmm... JABBA THE HUTT ON MARK EVERYONE!"