1. When a large group of Asian tourists-- the kind that are aloof and seem to be unaware of their surroundings and are roaming in a pack down the sidewalk--blocks the entire sidewalk, leaving you unable to move. The stoppage is usually caused by the group's collectively pointing at some mundane object, such as a McDonald's Arch or run down used book store.
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.