A temporary or long-term life-state characterized by lack of ambition, fondness for low cost beer, and a zen-like contentedness absent any knowledge of zen concepts or practices. Jackpine often manifests as the lack of motivation to get up and move from one couch to another.
"Wanna go get a hamburger?" "No, man, I got a case a' Jackpine. Can ya bring me one? Cheese, raw onions."