A term for someone who's head is full of sheep shit, but you love them much too call them a shit-face or a prick.
Alternative: Rhodri, bumfluff boy or van man.
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.