Who is J.J. Dufresne?

He likes breakfast when someone else cooks it. He likes a sandwich that someone else has assembled. He likes milk that's not sour, but he'll drink it if it is. He likes a boob, no matter what size, and he isn't fussy about perkiness. He likes short stories by Raymond Carver. He likes things made out of butter. He likes the state of Minnesota, which is lucky because that's where his mom lives, and he loves his mom.