It is humorous. Knowing the Italian language, I understand that venti means 20 (representing a 20 oz cup), and trenta means 30 (oz) which is the full capacity of an average stomach. That means venti will almost fill you up, and having a trenta will make your stomach wish you weren't such a glutton.
Slipstream
I agree. The coffee lingo is crazy. This says it like it is.
Evangel
It is humorous. Knowing the Italian language, I understand that venti means 20 (representing a 20 oz cup), and trenta means 30 (oz) which is the full capacity of an average stomach. That means venti will almost fill you up, and having a trenta will make your stomach wish you weren't such a glutton.