The phrase you shout to your friend when you see THAT enormously fat girl come towards you, shaking the floor like a whale would if it could walk. Not just a fatty - a fatty fatty!
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.