An all-purpose term used to refer to a person who is irritating or otherwise. It is more colorful than traditional names, and is generally less offensive, so it is often used teasingly.
Interchangeable with such terms as: dipshit, fuckwad, etc.
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.