When someone with hairy nether-regions exhibits less than adequate hygiene, the matted hair due to excess fecal matter forms these disgusting ass dreadlocks.
Mike: Dang, that big 'ne looks HOT!
Erich: No way, man. That ass has shit locks!
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.