Possible Clues:

• Eat too much
• Bellyful causes greedy person to lose weight
• Having to hold in large belly is just too much
• A surplus or excess
• Flood, as a market
• One pound of this is just too much in the colon
• Oversupply, plethora
• Greedy person loses weight - more than enough
• Surfeit or over-supply
• An excessive supply, maybe on the market