Beer O Wulf got sacked
in the Norman Conquest
actually he just got fired from his job at Norm's Liquor Palace
he loaded his car with a case of Killian Red that he left in the garbage can
and headed back to his Quonset hut at the edge of the industrial part of town.
It had been some time since he had defeated the monster, Mr Grindle, and also Mr. Grindle's mother, at the House of Pancakes pancake eating contest. He moved back home after that and was dubbed King of being back home at his parents. No one had told him about the Dragon.