"Is it my imagination, or is something off about that Stewardess?"
"No, she's definitely a Plane Hopper," struggling out of seat; "I'll be back in an hour and a half."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.