Pajero could be a equivalent for Lazy (in english). And as Poxwen says an insult.
We need the context, maybe the commentary could say something, about the Abyssal Admiral and his intentions.
Apparently, from some cursory Googling, it's said by the crowd before darts in variety shows. And yes, it's from the car name, something to do with a Freelander ad, and that being transferred to Pajero.
It's the Mitsubishi Pajero, also known in the US as the Mitsubishi Montero. It's a popular brand of car for medium-size families due to its spacious interior and (relatively) economical mileage for a full-size SUV.
According to wikipedia, it's a reference to a show where contestants can throw a dart at a spinning wheel to determine their prize (like in the picture). The Pajero is always the best prize, and therefore the crowd yells that.
The Mitsubishi Pajero is a sport utility vehicle manufactured by Mitsubishi Motors. It was named after Leopardus pajeros, the Pampas cat, which is native to the Patagonia plateau region of southern Argentina.