Possible Clues:

• Like 13 across, is a ringer for first youngster and too often, one has a reputation for having a six-pack
• Mild abdominal obesity, slangily...and a hint to what you can find in 18-, 20-, 38-, and 55-Across
• It's sticking out that you drink a lot
• The Budweiser Corporation?
• What's round due to too many rounds?
• Spare tire
• *Physical attribute of Homer Simpson
• Drinker'�s paunch
• Gut
• Be close to hospital ward to stomach sign of person who loves his six-pack