Possible Clues:

• Knocked back a few
• Anti-Flag "Drink ___ Punk"
• Nursed, say
• Swallowed
• Sank in position, following low grade
• Had a parking lot shot
• The doctor began to be no teetotaller
• Quaffed by rating on quarterdeck
• Wetted one's whistle
• Acted like a sponge