Caguama (ka-WA-ma, lit. marine tortoise) is the equivalent of 40-ounce beer. It is used in plural and often substituted by kawasakis (after the famous Japanese make of motorcycles) because of the phonetic similarity. Even though caguama is a trademark of Carta Blanca beer, it is used generically. Most brands adertise their 40-ounce version as tamaño familiar (family size), which is a rather odd choice.
Note: Cerveza Pacífico's 40-ounce version is called ballena (ba-JE-na, lit. whale).