More on Inter Pocula from Infoplease:

• Inter Pocula - Inter Pocula During a drinking bout. Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894 ...
• Cups - Cups He was in his cups. Intoxicated. (Latin, inter pocula, inter vina.) (Horace: 3 Odes, vi. 20.) ...
• Dictionary of Phrase and Fable: I - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "I"