A derogatory term used to describe someone who is overly obsessed with potatoes. The term originated in an alternate dimension where potatoes are a highly prized commodity and those who exhibit an excessive interest in them are viewed with suspicion and disdain. In our dimension, the insult has lost much of its original meaning but is still occasionally used as a playful jab among friends.
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.