Possible Clues:

• Boyfriend, initially visiting model prison, brings pot
• Beer mug shaped like a man wearing a three-cornered hat
• Man getting drunk from play about British prison
• Drinking mug in the shape of a person
• Beer mug
• Fiddle about British prison vessel
• Drunken joy, but gallons needed for beer container
• Drinking mug (for a stout man?)
• Kind of mug like man''s head with three-cornered hat