If you stomach is too large (most common for "beer bellies"), you may opt to tuck it into your pants to hide it. This leaves a clearly defined outline of the stomach overhanging.
Ethan had put on quite a lot of weight in the past few years, so when he went on his big date he decided to go with a formal chub n' tuck.
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.