Humor slut: Defined as any given individual, who will do anything, and go to any length to get a laugh out of a given situation, purely to be the center of attention and stroke their own ego.
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.